Bilson Arms BA-15FC is a 6mm ARC semi auto rifle built around Bilson's forward charging system letting you run the action without breaking cheek weld. A 416R stainless 18 in barrel with rifle-length direct impingement gas is designed for smooth cycling and consistency with heavier 6mm projectiles. Finished in Tactical Gray and Graphite Black Cerakote it's set up as an optics-ready AR-style platform with M-LOK and a Picatinny top rail.Key Features 6mm ARC with 18 in 416R stainless steel barrel (1:7 twist) Direct impingement semi auto with rifle-length gas system Threaded muzzle 5/8x24 with A2 birdcage Bilson forward charging system Billet aluminum receivers with Picatinny top rail M-LOK free-float handguard 20+1 capacity (includes 20-round magazine configuration per listing)Bilson Arms builds AR-style rifles that emphasize practical innovation especially around handling and ergonomics. The brand is known for its forward charging concept paired with modern materials and optics-ready layouts. Bilson rifles are designed for shooters who want a distinctive control system while keeping common AR compatibility and accessory support.