The KP-15 can comfortably handle standard AR-15 chamberings, such as .223 Rem./5.56 NATO to 6.8 mm SPC. However, it is not rated for .458 SOCOM, .50 Beowulf or .50 BMG. The suggested retail price ...

PSA’s stripped precision-forged patriotic lowers come in three basic designs, the I STAND-10 for AR-10s (i.e. 308 Win/7.62 NATO rifles), the I STAND-9 for 9mm pistol caliber carbines, and the I ...

The Shield Arms SA-15 built on the patent-pending FLR folding lower receiver is shipping now in stripped lower and complete pistol configurations. The FLR is billed as “…the world’s first ...

Palmetto State Armory would like to honor our esteemed congressman Joe Wilson with the release of our new “You Lie” AR-15 lower receiver. These lowers are the same great quality you have come ...

The BHI-15 Forged Lower Receiver benefits from the same attention to engineering detail and machining specifications as the BHI-15 Billet Lower Receiver, but at a more economical price.

Defense Distributed, a group run primarily by gunsmith Cody Wilson, has released a video of an AR-15 with a 3D-printed lower receiver firing off over 600 rounds, a unique feat in the realm of 3D ...

Ar15.com user [HaveBlue] has been working for some time on a 3D printed lower receiver, and now reports that the parts are fully working. Using a Stratasys 3D printer from the 90’s [HaveBlue]… ...

The Lower Upgrade Kit from Leapers is a quick and economical way to enhance your AR-15’s lower receiver, as it bundles four of the company’s upgraded components at a reduced cost.