The XBRN-177E2 is an authentic reproduction of an early Special Forces carbine featuring a period-correct flash hider with grenade ring, a full-fence M16A1 lower receiver and a collapsible stock.

With upper and lower receivers designed in conjunction with FM-Products, the BRN-10 is compatible with standard DPMS/SR25 components including triggers, magazines, barrels, bolt carrier groups ...

The Republic of Korea, the Philippines, and Singapore began license producing the M16A1, and many other nations ... practically copying the M16 design in the lower receiver and heavily emulating ...