Nitromet 9mm 7.5" Barrel
Nitromet 9mm 7.5" Barrel, Match-quality 7.5" barrel feature Nitromet salt bath nitride to give them maximum wear resistance and durability that standard barrel finishes just can't match. Barrel has a Nitromet nitrided bore treatment for longer life than chrome without affecting accuracy. Barrels are made of 4150 CrMoV, chambered for 9mm, button rifled with 1-10 twist rifling, and machined to a standard government exterior profile. 1/2"-28 threads on the muzzle end.