PSA 16" Midlength 5.56 NATO 1:7 Stainless Steel MOE Freedom Rifle Kit with Rear MBUS- 77932956

Barrel: This 416R Stainless Steel barrel is chambered in 5.56 NATO with a 1:7" twist, M4 barrel extension, and a mid-length gas system. It is finished off with Magpul Mid-length MOE M-Lok Black Handguards, an F-marked Front Sight Base, and an A2 Flash Hider.Upper: The forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. These uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt Carrier Group: Shot peened Carpenter 158 Bolt, MP tested & phosphate coated. 8620 full auto profile steel carrier is chrome lined and phosphate coated. Chrome lined gas key is fastened with grade 8 bolts and staked per mil-spec.Lower Build Kit: Includes Palmetto State Armory Freedom Lower Parts Kit with MOE grip, MOE stock, and Mil-Spec buffer tube assembly. Everything you need to finish your stripped lower!Includes: Magpul MBUS Rear Sight - Black. The US made MBUS (MagpulA(R) Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform. Spring-loaded flip up action is easily activated from either side or by pressing the top. Impact resistant polymer construction provides light weight and resists operational abuse. Each upper is assembled to order, and test fired to check gas function.