As of this writing, the ever volatile AR market has slowed down enough for factory complete rifles, components and kits to return to ... Anderson Manufacturing AM-15 multi-cal lower.

Armaspec’s Stealth Recoil Spring, currently in its fourth generation, is a self-contained upgrade to the AR-15’s standard buffer and spring—and the company now offers the unit as a kit that ...

The technique is known as "bump firing" and effectively turns a semi-automatic AR-15 into a machine gun. The company sells shoulder-fired stocks with similar technology and wanted to expand on ...