Ar10 308 lower 80 Tactical Machining was the original manufacturer of 80% lowers for the AR platform. Build or finish your AR-10 with a lower receiver from Palmetto State Armory. Takedown Pins set, springs and detents for the . BILLET . 308 DPMS GEN 1 80% BILLET LOWER RECEIVER. LMT . 308 Forward Assist Assembly & Ejection Port Shop for your 80 percent . Add To Cart Item Added to Cart! Choose from our wide selection of billet receivers sets or stripped 308 lower receivers. The 80 308 Lower Mag well is fully broached for a perfect fit every time. 308 lower right here at Thunder Tactical. kswqmjfpdokjldttbhbpjuxutfatziqebcadtsdlgdpljzzvgfzmhxbsjtfmohzdknhwoxcajz