Out of stock
Forged, fully assembled lower is ready for your choice of upper. Precision machined from 7075-T6 aircraft-grade aluminum alloy, mil-spec hardcoat anodized, then Teflon-coated black for superior wear and scratch resistance. Includes mil-spec trigger group. The M4 lower is equipped with a 6-position, collapsible carbine stock made of impact-resistant polymer.