The "BOARHUNTER-15(TM)" lower comes from the most advanced aerospace manufacturing technology and is one of the industry's finest forged, MIL-SPEC lowers. This PSA lower is made using our automated manufacturing process. Our multi-million dollar engineering and manufacturing facilities allow us to produce a product of unequaled quality and value. These forged lowers are quality made, MIL-SPEC designed and use 7075-T6 Aluminum. The Palmetto State Armory "BOARHUNTER-15(TM)" Lower will accommodate all AR-15 platform builds and is marked "BOARHUNTER-15(TM) MULTI". The finish is MIL-A-8625, Type III, Class 2 black.