Semi-auto MOD4SA lower receiver. CMMG lower receivers feature Mil-Spec, .250 diameter take-down pins and .154 diameter fire control pins. The forged aircraft grade 7075 T6 aluminum lower is hard coat anodized to Mil-Spec, it is also Teflon coated for added durability and color consistency. All internals are semi-auto, Mil-Spec. Receivers are RDIAS/RLL compatible. This receiver comes with all of the lower parts, front take-down pin, fire control group, semi-auto selector, trigger guard, pistol grip, magazine catch/release, ambidextrous stock end plate, and 6 position carbine butt-stock installed.

These products can be shipped to California without a bullet button installed as long as not sent with an upper as well. We are registered with the CA DOJ

This lower is 100% ready to pin on any AR15 upper and be ready to fire!