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When applied to a weapon, the mod greatly increases the weapon's total magazine size, allowing more shots to be fired before reloading. It is the default magazine mod for the light machine gun.
|10mm submachine gun||Plan: 10mm submachine gun drum magazine||N/A (0%)|
|Light machine gun||N/A|
|Assault rifle||Learned from scrapping||Low (15%)|
|Handmade rifle||Very low (10%)|
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The drum magazine mod may be crafted and applied to weapons at a weapons workbench if the relevant plan is known. With the exception of the 10mm submachine gun, the mod can only be learned from scrapping weapons of the same type.
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