The infobox template in this article is missing some required data. You can help Nukapedia by filling it in.
“Superior ammo capacity. Inferior reload speed.”
The large magazine simply allows the gun to contain more ammo per magazine, but it increases the weight of the weapon.
Nuclear material (varies)
Large magazine (1)
An existing 10mm large magazine cannot be attached to a 10mm pistol, although a new one can be crafted if the Sole Survivor has the first rank of the Gun Nut perk. [verified]
This article is too short to provide more than rudimentary information about the subject. You can help Nukapedia by expanding it.