This Ruger AR Lower is a complete mil-spec lower receiver machined from 7075-T6 forged aluminum, built to deliver a smooth, consistent trigger pull and a solid foundation for any AR-15 build. It comes fitted with a Magpul MOE-K2 grip and Magpul DT Carbine collapsible buttstock on a mil-spec buffer tube, along with the Ruger Elite 452 two-stage trigger for reliable, repeatable performance. An adjustable tension screw minimizes play between the upper and lower receivers for a tighter overall fit. Machined from 7075-T6 forged aluminum to mil-spec tolerances Ruger Elite 452 two-stage trigger with 4.5 lb. pull Full-strength hammer spring for consistent primer ignition Lightweight hammer for faster lock time and improved accuracy Magpul MOE-K2 pistol grip Magpul DT Carbine collapsible buttstock Mil-spec buffer tube Adjustable tension screw to reduce upper/lower receiver play Adjustable length of pull Hardcoat anodized finish