Spikes Tactical Complete AR-15 M4 Lower Receiver Without Buttstock

Semi-auto lower receiver is machined from a 7075 T6 aluminum forging to mil-spec dimensions for precise fit and outstanding performance. Ruggedized hardcoat anodized finish resists scuffs, scratches, and wear. Stamped and color-coded bullet selector position markings notify operator when weapon is in "safe" or "semi-auto." A "full-auto" position is not selectable but gives this semi-auto lower receiver the appearance of being multi-burst capable. Magazine well features Spike's spider logo and multi-cal engraving. Complete Lower w/Buttstock includes stainless steel trigger, black oxide finished trigger guard and hammer assembly, pistol grip, six-po Mfg: Spikes Tactical SPECS: Receiver - 7075 T6 aluminum, hardcoat anodized, matte black finish. Buttstock - Reinforced molded polymer, black. "Cal Multi" stamped on side of magazine well. .154" hammer/trigger pin holes. .250" takedown/pivot pin holes.