CMMG

The Mk4LE9 Optics Ready model is chambered for 9mm Luger, and with no front sight base to interfere with the sight picture. CMMG's basic rifle, it features a nitrided 16.1" 4140 CrMo steel barrel in a M4 profile with an A2 compensator (1/2-36 tpi). The lower and upper receiver is made of forged 7075-T6 Aluminum M4, along with a single stage trigger. It has an M4 type two-piece handguard, A2 pistol grip, M4 buttstock with 6-position mil-spec receiver extension.