+3 BRT 16" OPTIMUM Upper Receiver Group URG-16-HFCL $725.00 Out of stock Quantity: 1 Add to Bag Product Details BRT 16" Upper Receiver Group Barrel: BRT OPTIMUM 16" HF CL or BRT OPTIMUM 16" SR CL Gas System: BRT EXT Intermediate Length, optimized for 16" Hand Guard: 12.6", 13" or 13.7" MLOK rail. Upper: Forged from 7075 USGI M4 Upper w/ dry film lube. Upper is test fired before shipping. 100% made is USA. Save this product for later Favorite