Rainier Arms forged lower receiver is made from 7075 aluminum. The best anodizing dies are used for a deep black finish. Features a upper to lower tensioning screw and a flared out magwell for quick mag changes.
***Battle Arms 45 Degree Selector Compatible***
FFL Required Before Shipping.
Please have your dealer email their license to FFL@rainierarms.com or they can also fax it in. Please give us a few days to process the information.