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The SB Tactical SBA3X is an adjustable pistol stabilizing brace built for shooters who want a dependable, no-nonsense way to improve control and accuracy on mil-spec AR platforms. Whether you're setting up a pistol-caliber carbine, a short-barreled rifle, or a dedicated range gun, this brace offers the kind of straightforward functionality that works across multiple configurations without fuss or compromise. The minimalist design keeps weight down while the integral QD sling socket gives you mounting options for slings and accessories without extra hardware.
What sets the SBA3X apart is its versatility: five adjustable positions let you dial in the length of pull to fit your arm length, body armor, or shooting preference. That flexibility matters when you're moving between different platforms or adapting to different shooting scenarios. The adjustable nylon strap stays put and doesn't add bulk. SB Tactical engineered this brace in the USA with input from veterans, and it shows in the thoughtful, purposeful design. The black finish is durable and pairs well with most build aesthetics.
Compatibility is straightforward: the SBA3X works with any mil-spec carbine receiver extension (also called a buffer tube). That's the standard tube found on most modern AR-platform uppers, so integration into an existing build or new setup is seamless. Just make sure your receiver extension is mil-spec; the brace isn't designed for commercial-spec tubes. The integral, ambidextrous sling socket means you can run a sling from either side without permanent modifications, which is handy if you shoot both right- and left-handed or share the gun with others.
SB Tactical designs and markets this product as a forearm brace for stabilizing the firearm platform. It is neither designed nor intended to be fired from the shoulder, and the user is responsible for ensuring compliance with all applicable federal and state laws regarding firearm configuration and use.
| Fit | All platforms with mil-spec carbine receiver extension |
| Cavity Depth | 6.0" |
| Adjustable Lengths | 6.75", 7.6", 8.25", 8.75", 9.5" |
| Max Width | 1.8" |
| Strap Width | 1.0" |
| Weight | 6.75 oz |
| Color | Black |
| Included | Brace, adjustable nylon strap |
The SBA3X is designed for mil-spec carbine receiver extensions. It is not compatible with commercial-spec tubes. Make sure your tube meets mil-spec dimensions before purchasing. The receiver extension itself is not included with the brace.
Yes. The SBA3X offers five adjustable positions (6.75", 7.6", 8.25", 8.75", and 9.5") so you can dial in the fit for different arm lengths or shooting positions.
The SBA3X includes an adjustable nylon strap. It features an integral, ambidextrous QD sling socket so you can attach a QD sling on either side, but a sling is sold separately.
SB Tactical designs this product as a forearm stabilizing brace, not for shoulder firing. Federal and state laws regarding firearm configuration and use vary, and the user bears sole responsibility for ensuring compliance with all applicable laws in their jurisdiction.

SKU: 121685503 • Weight: 0.8oz