BRT 12.5 OPTIMUM Upper Receiver Group
Barrel: BRT OPTIMUM 12.5" HF CL or BRT OPTIMUM 12.5" SR CL
Gas System: EXC Length, Optimized for 12.5"
Hand Guard: 11.5", 11.6" or 11.7" 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.
