Fallout 4 weapon mods

For a list of legendary weapon effects in Fallout 4, see Fallout 4 legendary weapon effects.

This page lists all weapon mods in Fallout 4.

The content is not described in full detail on this page. For details, please see the respective articles.
For weapon mods in other Fallout games, please see "Weapon mod".
For an overview of Fallout 4 content, please refer to "Portal:Fallout 4."

Overview[]

Weapon mods can be built from raw materials and attached to weapons at weapons workbenches. There are over 700 mods,^[1] generally including sights, barrels, stocks, receivers, magazines and more. The Gun Nut perk is required to create better modifications for guns. The Science! perk is used to create better modifications for energy weapons and create advanced modifications for bullet based firearms. The Blacksmith perk is used to create better modifications for melee weapons.

Perks and weapon mods[]

Most firearms, including energy weapons, offer the option to customize the grip/stock, receiver and sight, changing which perks affect the weapon.

A firearm with an automatic receiver gets bonuses from the Commando perk.
A firearm with a non-automatic receiver and pistol grip gets bonuses from the Gunslinger perk.
A firearm with a non-automatic receiver and a stock mod gets bonuses from the Rifleman perk.
A firearm with a suppressor mod gets bonuses from the Ace Operator perk. As well as the Cloak & Dagger perk when sneak attacking.
The Sniper perk works only with scoped non-automatic rifles.

Grip mods create pistol weapons, while stock mods create rifle weapons. This allows for almost any ranged firearm to be customized to fit the player's character build.

Action Points and weapon mods[]

~~This section is based on research presented in YouTuber RedMage's [1] video: "Fallout 4: VATS and AP Formula Solved!" 10mm pistol~~

Now based on Creation Kit values and formula.

The formula[]

Attacking from V.A.T.S. uses up Action Points (AP). There are two numbers that determine the AP cost for every type of modded weapon: the weapon's base AP cost, and the mods' AP multipliers. They do it based on this formula:

base AP cost x (1 + sum of mod AP multipliers)

Every weapon has a base AP cost that determines how much mods affect the AP of that type of weapon, since mods apply a percent change. Combat shotguns, for instance, have a base AP cost of 35, while laser guns have a base AP cost of 25, meaning mods applied to combat shotguns will have a greater impact on AP (up or down) than mods on laser guns.

Some mods have an AP multiplier, which is how strongly it changes the weapon's AP cost. Most equivalent mods have the same multiplier across weapon types, but there are some inconsistencies when it comes to naming. For instance the short barrel on the 10mm pistol is equivalent to the stub barrel on pipe weapons, which has an AP multiplier of -15%. The long barrel on the 10mm pistol is consequently equivalent to the short barrel (AP multiplier of -10%) on the pipe weapons and other rifles, and not the long barrel on pipe weapons and rifles, which has an AP factor of +10%.

Note that all weapons essentially have mods on by default that reduce the AP Cost. For instance, the short barrel which is standard for all rifles, with an AP multiplier of -10% (or -0.10 if you will), brings the AP cost on the hunting rifle down from 28 to 25.2. This is why you'll see some differences between the base AP cost and standard AP cost in the table below.

Weapon and mod details[]

Known weapon stats
Type	Weapon	Base AP cost	Standard AP cost	Mod AP mult
Pistols	.44 Pistol	35	28	-20%
Pistols	10mm pistol	28	22.4	-20%
Rifles	Assault rifle	32	30.4	-5%
	Combat rifle	25	22.5	-10%
	Hunting rifle	28	25.2	-10%
	Submachine gun	35	42	+20%
Shotguns	Double-barrel shotgun	30	27	-10%
Shotguns	Combat shotgun	35	31.5	-10%
Pipe	Pipe gun	30	24	-20%
	Pipe revolver	35	28	-20%
	Pipe bolt-action	29	23.2	-20%
Energy	Laser gun	25	20	-20%
	Plasma gun	30	24	-20%
	Gamma gun	30	24	-20%

Example

A combat rifle (base AP cost = 25) with reflex sight (AP multiplier = -15%) and short barrel (AP multiplier = -10%):

25 x (1 + (-0.15 - 0.1) = 25 x (1 - 0.25) = 25 x 0.75 = 18.75 AP cost per shot

Ballistic weapons[]

Receivers
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
Plain	Standard receiver	0	28	001A8A46	22.4	001A8A43	30.4	001A8A4C	22.5	001A8A53	25.2	0015E93B	27	001A8A62	31.5	001A8A58	24	001A8A96	28	001A8A9A	23.2	001A8A90
	Hardened receiver	0	28	00188735	22.4	0015E92A	30.4	0018895C	22.5	00185BEC	25.2	00155037	27	001C6F31	31.5	00186C55	24	0015C857	28	0015C89B	23.2	0015C87C
	Powerful receiver	0	28	00188736	22.4	0015E92B	30.4	0018895D	22.5	00185BED	25.2	00155038	27	001C6F32	31.5	00186C58	24	0015C858	28	0015C89C	23.2	0015C87D
Weight	Light frame receiver	-25%			15.4	0015BD70	22.4	0018895B	16.25	00185BEB	18.2	00155036	19.5	001C6F30	22.75	00186C5D	16.5	0015C856	19.25	0015C89A	15.95	0015C87B
Weight	Heavy frame receiver	+25%			29.4	0015BD6F	38.4	0018895A	28.75	00185BEA	32.2	00155035	34.5	001C6F2F	40.25	00186C56	31.5	0015C855	36.75	0015C899	30.45	0015C87A
Special	Calibrated receiver	0			22.4	0015BD6D	30.4	00188958	22.5	00185BE8	25.2	00155033	27	001C6F2D	31.5	00186C4B	24	0015C853	28	0015C897	23.2	0015C878
	Calibrated powerful receiver	0			22.4	00161D09	30.4	0018895E	22.5	00185BEE	25.2	00161D0C	27	001C6F33	31.5	00186C57	24	00161D0D	28	001916B9	23.2	001916AC
	Hair trigger receiver	-10%			19.6	0015BD6E	27.2	00188959	20	00185BE9			24	001C6F2E	28	00186C52	21	0015C854
	Tuned receiver	-10%									22.4	00155034							24.5	0015C898	20.3	0015C879
	Advanced receiver	-10%			19.6	0015BD67	27.2	00188951					24	001C6F34	28	00186C4F
	Advanced receiver (.44 Pistol)	0	28	00188737
Auto	Automatic receiver	+25%			29.4	0015E928	38.4	00188952	28.75	00185BE2					40.25	00186C4D	31.5	0015C84B
	Armor piercing automatic receiver	+25%			29.4	0015BD6A	38.4	00188953	28.75	00185BE3					40.25	00186C4C	31.5	0015C84C
	Hardened automatic receiver	+25%			29.4	0015FA2C	38.4	00188954	28.75	00185BE4					40.25	00186C54	31.5	0015FA2D
	Rapid automatic receiver	+25%			29.4	0015BD69	38.4	00188955	28.75	00185BE5					40.25	00186C6A	31.5	0015C84F
	Hardened piercing auto receiver	+35%			32.2	00161D19	41.6	00188956	31.25	00185BE6					43.75	00186C53	34.5	00161D1C
	Powerful automatic receiver	+25%			29.4	0015FA31	38.4	00188957	28.75	00185BE7					40.25	00186C59	31.5	0015C852
Ammo	.45 receiver	-10%								Standard							21	0015C849		Standard
	.38 receiver	0							22.5	00210488	25.2	0021048A						Standard	28	0021048E	23.2	0021048C
	.308 receiver (Pipe Revolver)	0										Standard							28	0015C895		Standard
	.308 receiver (Combat Rifle)	-10%							20	00185BE1
	.50 receiver	0									25.2	00155031									23.2	0015C876

Barrels
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
Very Short	Snubnose / Short (10mm) / Sawed-off / Stub barrel	-15%	26.25	00188733	21	001A8A40							25.5	00188A24			22.5	001A8A92	26.25	001A8A98	21.75	001A8A8C
Short	Bull barrel / Long light (10mm) / Short light barrel	-15%	26.25	00188732	21	0015BD58			21.25	00185BFD	23.8	0015502F					22.5	0015C837	26.25	0015C889	21.75	0015C864
	Bladed bull barrel	-15%	26.25	0005221D
	Long light ported barrel (10mm)	-15%			21	0015BD59
	Standard (.44) / Long (10mm) / Short barrel	-10%	28	00188731	22.4	0015BD57	30.4	0018894A	22.5	00185BFC	25.2	001362B0	27	00188A23	31.5	00186C6E	24	0015C836	28	0015C888	23.2	0015C863
	Long ported (10mm) / Short ported barrel	-10%			22.4	0015BD5A	30.4	0018894B	22.5	00185BFE					31.5	00186C71	24	001651C4	28	001651C6	23.2	001651C2
Long	Long light barrel	0							25	00185BFA	28	0015E92F					27	0015C834	31.5	0015C886	26.1	0015C861
	Long barrel	+10%					38.4	00188948	27.5	00185BF9	30.8	0015E92E	33	00188A22	38.5	00186C5E	30	0015C833	35	0015C885	29	0015C860
	Vented / Long ported barrel	+10%					38.4	00188949	27.5	00185BFB	30.8	0015E930			38.5	00186C61	30	001651C3	35	001651C5	29	001651C1
	Long finned barrel	+10%															30	00027F2E	35	00027F2F	29	00027F2D

Grips
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
Pistol	Standard grip	-10%	28	001A8A45	22.4	001A8A41											24	001A8A93	28	001A8A99	23.2	001A8A8D
	Comfort grip	-10%	28	00188734	22.4	0015E926											24	0015C838	28	0015C88A	23.2	0015C865
	Sharpshooter's grip	-15%			21	0015E927											22.5	0015C839	26.25	0015C88B	21.75	0015C866
Rifle	Short stock	0					30.4	0018894E	22.5	00185C02	25.2	0015E933	27	001A8A61	31.5	001A8A55
	Standard stock	+20%															33	0015C83B	38.5	0015C88D	31.9	0015C868
	Full stock	+20%					38.4	0018894C	27.5	00185BFF	30.8	001362B1	33	00188A25	38.5	00186C74
	Markman's stock	+20%					38.4	00245F88	27.5	00185C00	30.8	0015E931			38.5	00186C63	33	0015C83C	38.5	0015C88E	31.9	0015C869
	Recoil compensating stock	+20%					38.4	0018894D	27.5	00185C01	30.8				38.5	00186C6B	33	0015C83D	38.5	0015C88F	31.9	0015C86A

Magazines
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
Regular	Standard magazine	0			22.4	001A8A42			22.5	00185C05	25.2	001A8A6B			31.5	001A8A56	24	001A8A94
	Medium magazine / Standard (Assault)	+5%					30.4	0018897A			26.6	001362B5			33.25	00186C64
	Large magazine	+10%			25.2	0015BD60			25	00185C03	28	001362B4					27	0015C840
	Drum magazine	+10%					33.6	00188978							35	00186C5B	27	0015C83E
Quick	Quick eject mag	-5%			21	0015BD63					23.8	001A8A6C			29.75	001A8A57	22.5	001A8A95
	Medium quick eject mag	-5%					28.8	0018897B	21.25	00185C06	23.8	0015E935			29.75	00186C66
	Large quick eject magazine	0			22.4	0015BD61			22.5	00185C04	25.2	0015E934					24	0015C841
	Quick eject drum mag	0					30.4	00188979							31.5	00186C5C	24	0015C83F

Sights
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
Iron	Standard sights	0	28	001A8A47	22.4	001A8A44	30.4	001A8A4D	22.5	001A8A54	25.2	0015503D	27	001C6F37	31.5	001A8A59	24	001A8A97	28	001A8A9B	23.2	001A8A91
	Front Sight Ring	-5%							21.25	00185C09					29.75	00186C50
	Glow Front Sight Ring	-5%
	Glow sights	-7.5%			20.3	0015BD78			20.62	00185C08	23.1	0015503C	24.75	001F4957	28.87	00186C51	21.75	0015C85E	25.37	0015C8A2	21.02	0015C883
Reflex	Glow reflex sight	-15%															19.5	0022BA9E	22.75	0022BA9D	18.85	0022BA9F
	Reflex sight (dot)	-15%	22.75	001ACFB1	18.2	0015BD76	25.6	00188967	18.75	0018004D	21	0015503B	22.5	001C6F1C	26.25	00186C6C	24	0015C85D	22.75	0015C8A1	18.85	0015C882
	Reflex sight (circle)	-15%			18.2	0015BD77	30.4	001F425B	18.75	00185BF8	21	00247258	22.5	001C6F18	26.25	00186C6D
Scope	Short scope	+30%	38.5	00188738			40	00188963	30	00185BF4	33.6	0015E940			42	00186C72	33	0015C85C	38.5	0015C8A0	31.9	0015C881
	Medium scope	+45%					44.8	00188961	33.75	00185BF2	37.8	0015E93E			47.25	00186C67	37.5	0015C85B	43.75	0015C89F	36.25	0015C880
	Long scope	+50%					46.4	0018895F	35	00185BF0	39.2	0015E93C			49	00186C62	39	001916B3	45.5	001916BA	37.7	001916AD
Night Vision	Short night vision scope	+30%					40	00188964	30	00185BF5	36.4	0015E941			42	00186C70	33	001916B6	38.5	001916BD	31.9	001916B0
	Medium night vision scope	+45%					44.8	00188962	33.75	00185BF3	33.6	0015E93F			47.25	00186C65	37.5	001916B5	43.75	001916BC	36.25	001916AF
	Long night vision scope	+50%					46.4	00188960	35	00185BF1	39.2	0015E93D			49	00186C60	39	001916B4	45.5	001916BB	37.7	001916AE
Recon	Recon scope	+40%			33.6	00184C58
	Recon scope (.44 Pistol)	+30%	38.5	001ACFAF
	Short recon scope	+30%					40	002492D6	30	002492D7	36.4	002492DA			42	002492D8	33	002492DF	38.5	002492E0	31.9	002492DE
	Long recon scope	+50%					46.4	00188966	35	00185BF7	39.2	0015503A			49	00186C77	39	001916B8	45.5	001916BF	37.7	001916B2

Muzzles
Mod Class	Mod	AP multiplier	Pistols				Rifles						Shotguns				Pipe Weapons
			.44 Pistol		10mm pistol		Assault rifle		Combat rifle		Hunting rifle		Double-barrel shotgun		Combat Shotgun		Pipe gun		Pipe revolver		Pipe bolt-action
			AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID	AP	Form ID
	No muzzle	0			22.4	N/A	30.4	N/A	22.5	N/A	25.2	N/A	27	N/A	31.5	N/A	24	N/A	28	N/A	23.2	N/A
Bash	Bayonet	0									25.2	0015E937
	Small bayonet	0															24	0015C845	28	0015C891	23.2	0015C872
	Large bayonet	0							22.5	00185BDC					31.5	00186C5A	24	0015C844	28	0015C890	23.2	0015C871
Recoil	Compensator	0			22.4	0015BD64	30.4	0018894F	22.5	00185BDE	25.2	0015E938			31.5	00186C4E	24	0015C846	28	0015C892	23.2	0015C873
	Muzzle brake	0			22.4	0015BD65	30.4	001916A1	22.5	00185BDF	25.2	0015E939	27	00186C68	31.5	00247E8D	24	0015C847	28	0015C893	23.2	0015C874
	Spiked muzzle brake	0											27	001C6F17
	Suppressor	0			22.4	0015BD66	30.4	00188950	22.5	00185BE0	25.2	0015E93A			31.5	00186C75	24	0015C848	28	0015C894	23.2	0015C875

Energy weapons[]

Weapon	Slot	Mod	AP Cost Change	Description	Req Rank	Form ID
Laser gun	Capacitor	Standard capacitor	Unchanged	Standard.	None	0012ECED
		Photon exciter	unchanged	Improved critical shot damage and accuracy.	None	001877F1
		Beta wave tuner	Unchanged	Adds burning damage. Improved range.	None	001877F2
		Boosted capacitor	Unchanged	Improved damage. Reduced ammo capacity.	None	001877F3
		Photon agitator	Unchanged	Superior critical shot damage, accuracy and ammo capacity.	Science! 1	001877F4
		Gamma wave emitter	Unchanged	Adds better burning damage. Better range and ammo capacity.	Science! 1	001877F8
		Maximized capacitor	Unchanged	Better damage.	Science! 2	001877F6
		Boosted photon agitator	Unchanged	Superior critical shot damage and ammo capacity. Better accuracy. Improved damage.	Science! 2	001877F7
		Boosted gamma wave emitter	Unchanged	Adds better burning damage. Superior ammo capacity. Better range. Improved damage.	Science! 2	001877F8
		Overcharged capacitor	Unchanged	Superior damage. Improved ammo capacity.	Science! 3	001877F9
	Barrel	Short barrel	-10%		None	0009983D
		Long barrel	+10%	Better range, improved damage, sighted accuracy and recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 1	00091FB5
		Automatic barrel	+25%	Improved rate of fire, range and sighted accuracy. Worse recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 1	000997C9
		Sniper barrel	+35%	Superior damage and range. Worse recoil. Poor ammo capacity and hip-fire accuracy.	Science!	00099835
		Improved short barrel	-10%	Better damage.	Science! 1	001877E7
		Improved long barrel	+10%	Better damage and range. Improved sighted accuracy and recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 2	001877E6
		Improved automatic barrel	+25%	Superior rate of fire. Improved damage, range and sighted accuracy. Worse recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 2	001877E8
		Improved sniper barrel	+35%	Exceptional damage. Superior range. Worse recoil. Poor ammo capacity and hip-fire accuracy.	Science! 2	001877E9
	Grip	Standard grip	-10%	Standard.	None	00099836
		Comfort grip	-10%	Improved recoil and hip-fire accuracy.	None	001877EA
		Sharpshooter's grip	-15%	Better recoil and hip-fire accuracy.	Science! 1	001877EB
		Short stock	Unchanged	Exceptional sighted accuracy. Better recoil and aim with scopes. Improved bash.	None	00091FB7
		Full stock	+20%	Exceptional sighted accuracy. Better recoil and aim with scopes. Improved bash.	Science! 1	00091FB6
		Markman's stock	+20%	Exceptional sighted accuracy. Superior recoil and aim with scopes. Improved bash.	Science! 2	001877ED
		Recoil compensating stock	+20%	Exceptional sighted accuracy and recoil. Better aim with scopes. Improved bash.	Science! 2	001877EC
	Sights	Standard sights	Unchanged	Standard.	None	001877FA
		Improved sights	-5%	Improved focus and sighted accuracy.	None	001877FB
		Short scope	+30%	Improved magnification. Superior sighted accuracy.	None	001877FD
		Reflex sight	-15%	Better focus and sighted accuracy.	Science! 1	001877FE
		Medium scope	+40%	Better magnification. Superior sighted accuracy	Science! 1	001877FC
		Long scope	+50%	Superior magnification and sighted accuracy.	Science! 2	000BDCF8
		Short night vision scope	+30%	Night vision. Improved magnification. Superior sighted accuracy	Science! 2	00187801
		Medium night vision scope	+40%	Night vision. Better magnification. Superior sighted accuracy.	Science! 2	00187800
		Long night vision scope	+50%	Night vision. Superior magnification and sighted accuracy.	Science! 2	001877FF
		Short recon scope	+30%	Tracks targets. Improved magnification. Superior sighted accuracy.	Science! 3	002492B4
		Long recon scope	+50%	Tracks targets. Superior magnification and sighted accuracy.	Science! 3	00187802
	Muzzle	No muzzle	Unchanged	Standard	None
		Beam splitter	Unchanged	Splits beam into multiple projectiles covering a wider area. Poor accuracy and range.	Science! 1	00020BD1
		Beam focuser	Unchanged	Better range, accuracy, and recoil.	Science! 1	000BDCF9
		Gyro compensating lens	Unchanged	Superior recoil. Reduced range.	Science! 1	000C38ED
		Amplified beam splitter	Unchanged	Splits beam into multiple projectiles covering a wider area. Reduced accuracy. Poor range.	Science! 2	001877F0
		Fine-tuned beam focuser	Unchanged	Superior range and accuracy. Better recoil.	Science! 2	001877EF
		Quantum gyro compensating lens	Unchanged	Exceptional recoil. Reduced range.	Science! 3	001877EE
Plasma gun	Capacitor	Standard capacitor	Unchanged	Standard.	None	00100AE6
		Beta wave tuner		Adds burning damage. Improved range.	?	0019ECC5
		Boosted capacitor		Improved damage. Reduced ammo capacity.	?	0019ECC6
		Photon exciter		Improved critical shot damage and accuracy.	?	0019ECC4
		Photon agitator		Superior critical shot damage. Better accuracy and ammo capacity.	Science! 2	0019ECC7
		Gamma wave emitter		Adds better burning damage. Better range and ammo capacity.	Science! 2	0019ECC8
		Maximized capacitor		Better damage.	Science! 2	0019ECC9
		Boosted photon agitator		Superior critical shot damage and ammo capacity. Better accuracy. Improved damage.	Science! 3	0019ECCA
		Boosted gamma wave emitter		Adds better burning damage. Superior ammo capacity. Better range. Improved damage.	Science! 3	0019ECCB
		Overcharged capacitor		Superior damage. Improved ammo capacity.	Science! 4	001A8AAA
	Barrel	Short barrel	-10%	Standard.	?	00127792
		Splitter		Fires multiple projectiles. Improved damage. Poor accuracy.	?	0010D531
		Automatic barrel	+25%	Improved rate of fire, range and sighted accuracy. Worse recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 1	00102B5C
		Sniper barrel	+35%	Superior damage and range. Worse recoil. Poor ammo capacity and hip-fire accuracy.	Science! 2	0010B9D6
		Flamer barrel	30%	Flame-thrower conversion.	Science! 2	0005E6D2
		Improved short barrel	-10%	Improved damage.	Science! 2	0019ECC0
		Improved splitter		Fires multiple projectiles. Better damage. Poor accuracy.	Science! 3	0019ECC1
		Improved automatic barrel		Superior rate of fire. Improved damage, range and sighted accuracy. Worse recoil. Reduced ammo capacity. Poor hip-fire accuracy.	Science! 3	0019ECC3
		Improved sniper barrel		Exceptional damage. Superior range. Worse recoil. Poor ammo capacity and hip-fire accuracy.	Science! 3	0019ECC2
	Grip	Standard grip		Standard.	?	00100AE7
		Comfort grip		Improves recoil and hip-fire accuracy.	?	00100AE7
		Standard stock		Exceptional sighted accuracy. Better recoil and aim with scopes. Improved bash.	Science! 2	00111F7C
		Markman's stock		Exceptional sighted accuracy. Superior recoil and aim with scopes. Improved bash	Science! 3	0005E6CF
		Recoil compensating stock		Exceptional sighted accuracy and recoil. Better aim with scopes. Improved bash.	Science! 3	00108038
	Sights	Standard sights		Standard.	?	00188A1A
		Short scope		Improved magnification. Superior sighted accuracy.	?	001B6363
		Reflex sight		Better focus and sighted accuracy.	Science! 1	00115AB9
		Medium scope		Better magnification. Superior sighted accuracy	Science! 2	001B6361
		Long scope		Superior magnification and sighted accuracy.	Science! 2	001B635F
		Short night vision scope		Night vision. Improved magnification. Superior sighted accuracy	Science! 3	001B6364
		Medium night vision scope		Night vision. Better magnification. Superior sighted accuracy.	Science! 3	001B6362
		Long night vision scope		Night vision. Superior magnification and sighted accuracy.	Science! 3	001B6360
		Short recon scope		Tracks targets. Improved magnification. Superior sighted accuracy.	Science! 4	002492BA
		Long recon scope		Tracks targets. Superior magnification and sighted accuracy.	Science! 4	001357CF
Gamma gun	Barrel	Standard dish	-10%	Standard.	?	0014F6E6
		Deep dish	+10%	Better range and damage.	Science! 4	0014F6E7
		Zeta Wave Barrel	-10%	Changes weapon damage into Zeta Wave radiation.
		Lorenzo's Artifact	+10%	Uses telekinesis to push targets away.
	Grip	Standard grip	-10%	Standard.	?	001889D3
	Grip	Sharpshooter's grip	-15%	Better recoil and hip-fire accuracy.	Gun Nut 2	0014F6E8
	Muzzle	No muzzle
		Electric signal carrier antennae	+30%	Hold fire to charge additional electrical damage.	Science! 3	0014F6EA
		Signal repeater		Improved rate of fire.	Science! 4	0014F6E9

Melee weapons[]

Blunt[]

Slot	Mod	Description	Baseball bat
Slot	Mod	Description	Req Rank	Form ID
Upgrade	Barbs	Armor piercing. Improved damage.	None	00182CD1
	Spikes	Armor piercing. Better damage.	None	00182CCF
	Sharp	Targets bleed. Better damage.	None	00182CD0
	Chain-wrapped	Superior damage.	Blacksmith 1	00182CD4
	Blades	Targets bleed. Exceptional damage.	Blacksmith 2	00182CD3
	Heated coil	Adds Fire damage.	Blacksmith 2 Science! 1	00044691
	Rocket	Chance to cripple. Extra limb damage. Exceptional damage.	Blacksmith: 2 Science!: 2	00044689
	Spiked rocket	Armor piercing. Chance to cripple. Extra limb damage. Exceptional damage.	Blacksmith: 3 Science!: 2	0004468C
	Puncturing rocket	Armor piercing. Chance to cripple. Extra limb damage. Superb damage.	Blacksmith: 3 Science!: 3	0004468D
	Bladed rocket	Targets bleed. Chance to cripple. Extra limb damage. Superb damage.	Blacksmith: 3 Science!: 3	0004468A
	Heated rocket	Adds Fire damage. Chance to cripple. Extra limb damage. Exceptional damage.	Blacksmith: 3 Science!: 3	0004468B
	Searing puncturing rocket	Adds Fire damage. Armor piercing. Chance to cripple. Extra limb damage. Superb damage.	Blacksmith: 3 Science!: 4	0004468E
	Shocking puncturing rocket	Adds Electrical damage and chance to stun. Armor piercing. Chance to cripple. Extra limb damage. Superb damage.	Blacksmith: 3 Science!: 4	0004468F
Material	Black	No effect	None	001A034B
	Blue	No effect	None	001A034C
	Grey	No effect	None	001A034D
	Red	No effect	None	001A034E
	Mahogany	No effect	None	001A034F
	Cedar	No effect	None	001A0350
	Oak	No effect	None	001A0351
	Natural	No effect	None	001A0352
	Aluminum	Improved damage	Blacksmith 1	001A001D
	Weighted & indigo	Exceptional damage	Blacksmith 2	0004E429
	Weighted & yellow	Exceptional damage	Blacksmith 2	0004E42A
	Weighted & pink	Exceptional damage	Blacksmith 2	0004E428

Blades[]

Slot	Mod	Description	Chinese officer sword		Combat knife		Machete		Revolutionary sword		Switchblade
			Req Rank	Form ID	Req Rank	Form ID	Req Rank	Form ID	Req Rank	Form ID	Req Rank	Form ID
Blade	No upgrade	No effect	None	????????	None	????????	None	????????	None	????????	None	????????
	Serrated blade	Targets bleed. Exceptional damage.	Blacksmith 2	0018782D	Blacksmith 1	00187A0C	Blacksmith 2	00187851	Blacksmith 2	00187839	Blacksmith 1	00187847
	Electrified blade	Adds Electrical damage.	Blacksmith 2 Science! 1	0014A130
	Electrified serrated blade	Adds Electrical damage. Targets bleed. Exceptional damage.	Blacksmith 3 Science! 1	0014A131
	Stealth blade	Increased damage from sneak attacks. Targets bleed. Exceptional damage.			Blacksmith 2	00187A0D
	Electrified	Adds Electrical damage.							Blacksmith 2 Science! 1	0013B020
	Stun Pack	Adds Electrical damage, and chance to stun.							Blacksmith 3 Science! 1	0013B024

Other[]

Weapon	Slot	Mod	Description	Req Rank	Form ID
Junk Jet	Receiver	JunkJet receiver	Standard.	None	00111FFA
	Barrel	Short barrel	Standard.	None	0016048E
	Barrel	Long barrel	Superior range and sighted accuracy. Better recoil. Poor hip-fire accuracy.	Gun Nut 1	00102D57
	Grip	Standard stock	Standard.	?	0016048F
	Grip	Recoil compensating stock	Exceptional recoil.	?	00160490
	Sights	Standard sights	Standard.	?	0023A554
	Sights	Gunner sight	Better focus and sighted accuracy	?	00160491
	Muzzle	No muzzle	-	-	-
		Electrification module	Adds electrical damage to projectiles.	Gun Nut 2	00102D59
		Ignition module	Adds fire damage to projectiles.	Gun Nut 3 Science! 1	00102D58

Notes[]

Each time a new mod is built, the Sole Survivor receives a small amount of XP.
Building weapon mods replaces the current mod applied to the weapon, and the replaced weapon mod is stored in the character's inventory. Attempting to craft a weapon mod which is already present in the character's inventory will apply the mod from the character's inventory instead of building a new mod.
Mods stored in a workshop can be reused, and they will be available at all other settlements connected by a supply line. Mods can also be stored in containers.
Every disassembled weapon mod has a weight of 0.5.
Mods purchased from merchants may be reused an unlimited amount of times on as many suitable weapons as one wishes. The breakdown resource value for the weapon will reflect the addition of the mod.
Codsworth and Paladin Danse will love it when the player character creates weapon mods, and Preston Garvey likes it.
Unlike armor modifications, most weapon mods cannot simply be removed from a weapon except for muzzle modifications. They must be replaced with an available or a newly created modification before the desired mod will be put into the Sole Survivor's inventory. Should the Sole Survivor not have the skill or resources to create the higher tier mods, the mod on an acquired weapon may be replaced with standard mods with fewer resources expended and no skills required.
Each mod may have up to eight qualities describing the magnitude of the mod's effect on weapon stats. These qualities are always sorted in descending order in the mod's description, ranging from big bonus to big penalty: Exceptional > Superior > Better > Improved > (Standard) > Worse > Reduced > Inferior > Poor
The Nuka-World add-on includes new melee weapon mods that include rockets (like the super sledge) along with weighted and heating coil mods.
The mod reference will not work to attach mods to weapons using the console. "help suppressor 4 omod" can be used to see a list of item references which can be used to mod weapons in the console. However, the help information does not include which type of weapon it belongs to. This applies to both the "amod" and "attachmodtoinventoryitem" methods of adding the mod to the item. It is still possible to use a trial-and-error method to document the item type with the mod reference from the help result. ^{[citation needed]}

References[]

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