First Look: Rock River Arms RUK-9BT

First Look: Rock River Arms RUK-9BT


Meet your backpack's new best friend, the small and mighty RUK-9BT 9mm.

Coronavirus be damned! Rock River Arms (RRA) is releasing guns, pandemic, or no pandemic.

In the Illinois gunmaker’s sights as of late is its AR pistol lineup, which it recently bolstered with a 9mm option that goes by the handle RUK-9BT. Overall a slick and compact option that boasts the features most look for in this terse style of gun, include Glock magazine compatibility. Face it, the Austrian company calls the shots when it comes to mags. But hey, makes it simple to build a collection.

As to the RUK-9BT’s tale of the tape, it comes in at a very manageable 5 pound and measures in at 24-inches with the SB Tactical SBA3 5-position brace fully extended, a hair over 21 inches collapsed. The pistol’s 4.5-inch chrome-moly-lined barrel is topped off with a Smith Vortex flash suppressor and is mated with aircraft-grade aluminum extruded and billet receivers. RRA tops the RUK-9BT off with its proprietary two-stage trigger, lightweight free-float 4.25-inch handguard (M-Lok compatible) and NSP flip-up sights. A tidy package, fit for any backpack or truck cab.

The MSRP on the RUK-9BT is $1,350 and ships a handstop and one magazine.

More From RRA:

Colona, IL – Rock River Arms, one of the industry's most respected names in Modern Sporting Rifles and pistols, has announced an addition to the company's expanding lineup of AR-platform pistols. The new RUK-9BT was developed to address the needs and interests of shooters with an eye toward home and mobile defense capabilities.

The RUK-9BT is highlighted by a 4.5-inch chrome-lined barrel chambered in 9×19. Combined with its 4.25-inch RRA lightweight free-float handguard and SB Tactical SBA3 adjustable stabilizing arm brace, the RUK-9BT is exceptionally compact, light, and sized for maximum portability.

Based on RRA's own BT-9 billet lower receiver, the RUK-9BT incorporates a flared magwell that accepts GLOCK magazines. This allows the pistol to work in unison with a 9mm GLOCK primary or backup carry gun, ensuring ammo and magazine cross-compatibility anytime, anywhere.

Additional standard features of the RUK-9BT include an RRA two-stage trigger for precise trigger control and reduced shot disturbance, an integrated winter trigger guard to accommodate gloved hands, Smith Vortex flash suppressor, Low-Pro hand stop, and a Hogue rubber grip that offers superior firearm retention in a pistol platform. Also included are RRA's NSP flip-up front and rear sights designed for use as the primary sighting system or as a backup for an owner-installed red dot optic.

RRA RUK-9BT Specs:
Caliber: 9mm
Lower Receiver: BT-9 billet aluminum with GLOCK-compatible flared magwell and integrated winter trigger guard
Upper Receiver: extruded aluminum A4
Barrel: 4.5-inch chrome-lined, 1:10 twist
Muzzle Device: Smith Vortex flash suppressor, 1/2-36 thread
Trigger: RRA two-stage
Handguard: RRA lightweight free-float rail, 4.25-inch pistol length, M-LOK compatible
Grip: Hogue rubber pistol
Arm Brace: SB Tactical SBA3 stabilizing arm brace, 6-position adjustable
Length: 23.5 inches extended
Sights: RRA NSP flip-up front and rear
Includes: one GLOCK-compatible magazine, Low-Pro M-LOK compatible hand stop, manual, warranty
MSRP: $1,350

For more information on the RUK-9BT, please visit

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