+3 BRT OPTIMUM 11.5" Upper Receiver Group SKU URG-BRT11.5 $490.00 Out of stock Quantity: 1 Add to Bag Product Details BRT OPTIMUM 11.5 Upper Receiver Group Barrel: BRT OPTIMUM CQB 11.5" Gas System: CAR Length, Optimized for 11.5" Hand Guard: 10" Modular or M-LOK rail. Upper: Forged from 7075 USGI M4 Upper w/ dry film lube. Upper is test fired before shipping. NFA Rules Apply 100% made is USA. Save this product for later Favorite