BRT OPTIMUM 9.0" Upper Receiver Group SKU URG-BRT9.0 $440.00 In stock Quantity: 1 Add to Bag Product Details BRT OPTIMUM 9" Upper Receiver Group Barrel: BRT OPTIMUM PDW 9.0" Gas System: PDW Length, Optimized for 9.0" Hand Guard: 8" KeyMod 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