The KAC E3.2 bolt improves upon the durability and functionality of our renowned E3 bolt design, directly addressing ejection performance, specifically when using a suppressor with a short …

The ambidextrous bolt release, selector lever, and magazine release offers left-handed users the ergonomic advantages inherent to AR15-based controls. The drop-in KAC two-stage trigger …

Made from weapon-grade aluminum, and milled to reduce unneeded material, the receiver is extremely lightweight, but with the strength needed to provide a lifetime of high-density fire.

SKU: 25780 Categories: Discount Exempt Products, Firearms And Lowers, Lower Receivers Brand: Discount Exempt Products, KAC (Knights Armament Company)

Knight's Armament Company KAC Knight's Armament Company 14.5 SR-15 E3 Mod 2 Carbine Complete Upper M-Lok KM31949

Shop Now - Knights Armament SR-15 IWS Complete Lower Receiver assembly, ambi, with SopMod stock, 2 stage trigger, QD sling mount, safety and qd mount

The Knight's Armament SR-15 IWS Complete Lower Receiver is designed to provide AR aficionados with all the elements they need to construct their next go-to defensive rifle.

Forged out of aluminum for both strength and weight reduction, the 300 Blackout or 5.56 NATO KAC lower receiver features a SOPMOD stock and six-position buffer tube, as well as an …

Find a great selection of AR-15 lower receiver & get a start on your next rifle or pistol build. Primary Arms has industry-lead customer service for your AR lower.

Upper Receiver Parts. SR-15 Parts.