Stripped AR-style .308 upper and lower receiver sets are fully machined from 7075 T6 billet aluminum and matched for ultra-stable full-contact fit without slop or rattles. These sets accept DPMS LR-308 pattern components to allow for the installation of a variety of aftermarket parts. Flattop uppers feature a T-marked MIL-STD 1913 Picatinny rail. Lowers have an integral triggerguard for maximum structural rigidity, and have pictogram selector markings for safe, fire, and three-round burst firing positions. Accepts DPMS-pattern magazines, including the Magpul .308 PMAG. Available in with Parkerized finish or the Nor-Guard electroless nickel finish for outstanding resistance to corro Mfg: Black Rain Ordnance Inc. SPECS: 7075 T6 billet aluminum, Parkerized, matte black. .154″ (3.9mm) hammer/trigger pin holes. .275″ (6.4mm) takedown/pivot pin holes. Bolt catch screw not included. FFL required for purchase.