Chambered in 5.56 NATO OPS-11 is a sharp-looking smooth-shooting firearms featuring high-quality furniture. The OPS-11 Pistol features a proprietary slimline M-LOK handguard with built-in barrier stop that enshrouds the low-profile piston system and is topped with Franklin Armory’s Triumvir linear-compensating flash suppressor. The OPS-11 Pistol is enhanced with a B5 grip and an SB Tactical SBA5 pistol brace.