Description

Inspired by the Armalite® AR-180 of the 1960s. The Rebel MK-21 RONIN edition shares a large chunk of components with the BRN-180® piston system but introduces key features to improve reliability and usability in a short configuration.

With an entirely self-contained recoil system, the Rebel MK-21 RONIN rifle deos not require a buffer tube. This allows for easy compatibility with folding stocks/braces and rear picatinny adapters. Recoil guide rods and buffer easily remove from the rear when removing the upper receiver from the lower. Bolt and carrier easily slide out when removing the charging handle at the rear. Large ejection port allows for ease of access for cleaning.

Lightweight barrel profile sits inside the slim handguard, making for an extremely lightweight package, even with the piston driven system. Top picatinny rail sits extremely low compared to other piston systems, allowing for broad compatibility with common AR-15 height optic mounts and sights.

Free float MLOK handguard is free floated, and can easily be removed with one large screw located on the bottom of the receiver. This screw engages the rear of the barrel, pulling the handguard tight up against the receiver. Easily removed handguard allows for quick access to the gas system.

Ultra-reliable AR-180 piston operating system Compatible with current mil-spec AR-15 lowers
Machined 7075 T6 aluminum receiver & handguard - hardcoat anodized finish
5.5" Nitride Finished Barrels
9MM chamber
Button rifled bore
½"-28 threaded muzzle
Molded polymer ejection port cover
Lower full billet construction
Finish: Hardcoat type III anodizing
Trigger: Hyperfire 3.5lb tactical trigger
Extended takedown pins
Fully Ambidextrous (mag release, bolt release, selector, charging handle)
CNC machined from 7075-T6 billet aluminum
Oversized trigger guard
Screw-in bolt catch pin
Trigger reset set screw
Bullet selector markings
Semi-Auto operation
Tactical low pro steel flip up front and rear adjustable
Strike Folding Brace