Rock River Arms BT9 R9 COMPETITION 9mm Luger AR-15 Rifle - 16" - 1x 17rd Mag

Running 9mm in an AR-15 chassis, the Rock River Arms BT9 R9 COMPETITION 9mm 16" gives you reduced recoil, accessible ammunition costs, and a platform that shares controls with any AR-15 you already shoot.

The Rock River Arms BT9 R9 COMPETITION 9mm 16" is a semi-automatic AR-15 rifle chambered in 9mm, built around direct impingement operation for reliable cycling on the AR-15 platform.

Competition Ready: Pistol caliber carbines are a growing force in USPSA and other competitions — this platform is well-suited for PCC-class competition straight from the box.

Reduced Operating Costs: Running 9mm cuts per-round costs compared to rifle ammunition, extending how long you can train on a set budget without giving anything up in terms of practice value.

Familiar AR-15 Controls: Standard AR-15 ergonomics mean any AR-trained shooter can transition to this PCC with minimal adjustment — the same manual of arms, the same muscle memory.

Effective Home Defense: The 16" barrel optimizes 9mm velocity for defensive use while the carbine format provides handling advantages over handguns in a home or property defense role.

• Caliber: 9mm
• Barrel Length: 16"
• Gas System: Direct Impingement
• Handguard: Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 17‑Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Compatible with AR-9 pattern lower receivers and standard AR-15 controls. Magazine compatibility varies by configuration — consult product specs for Glock-pattern or COLT SMG-pattern magazine details. Designed for carbine or pistol buffer systems.

Receivers are machined from 7075 aluminum and finished with Type III Hardcoat Anodized, providing lasting corrosion and wear resistance under regular use and varied environmental conditions.

A strong pick for USPSA PCC competition, recreational range use, and home defense. Sharing ammunition with compatible handguns simplifies logistics for range trips and everyday carry.

Rock River Arms has been building precision AR-15 and AR-9 rifles in the USA since 1996, earning a reputation for reliable function and quality machining across their full product lineup. Made in the USA.