CMMG MK4 Pistol Lower Receiver 5.56 NATO

Mil-Spec AR-15. Forged 7075-T6 aluminum. Single stage Mil-Spec trigger. A2 pistol grip. Standard AR-15 safety selector. Knurled pistol tube receiver extension. Standard carbine spring and standard weight carbine buffer. Standard takedown/pivot pin holes and .155″ hammer/trigger pin holes. Type III hard anodized finish.