EDEMO WMD Guns 9mm 7.5in Government Profile 1-10 4150 CrMoV 1/2-28 Nitride Black 9MMB7.5 1-10 EDEMO1. Barrel has a Nitromet nitrided bore treatment for longer life than chrome without affecting accuracy. Barrels are made of 4150 CrMoV chambered for 9mm...