SB Tactical FS1913A01SB SBT Side Folding Brace with 1913 Hinge - Black

The SB Tactical FS1913A01SB is a compact side-folding pistol stabilizing brace designed for shooters running AR pistols and other platforms with an M1913 Picatinny interface at the rear receiver. This brace combines a low-profile steel hinge with a lightweight aluminum strut, giving you a stable shooting platform that collapses when you need it — ideal for handling, transport, or tight shooting positions. Built in the USA by a veteran-owned company, it's engineered to lock solid when extended and fold flat when not in use.

The FS1913A01SB uses a pull-through design for fast deployment and includes an adjustable nylon strap to secure it to your arm. At just 10 ounces, it won't bog down your setup, and the one-point-two-inch maximum width keeps the profile manageable. This model is compatible with a range of platforms — SIG MPX, MCX, and Rattler owners are well-served, as are builders running Rock River and other AR-platform uppers with rear-Picatinny attachment points. Whether you're at the range, running drills, or working through a carbine course, this brace delivers repeatability and control without the weight or complexity of a full stock.

SB Tactical designs all its products as forearm braces to stabilize the firearm platform. As with any brace installation, configuration changes may affect your firearm's legal classification, so verify your local and federal regulations before assembly.

Key Features

• Steel hinge locks securely in both folded and extended positions
• Low-profile side-fold design for compact storage and transport
• Lightweight 6061 aluminum strut (10.0 oz total)
• Pull-through deployment for fast transitions
• Adjustable nylon strap for a customized fit
• M1913 Picatinny compatibility with AR pistols and other platforms
• Made in the USA

Specifications

Model	FS1913A01SB
Compatibility	M1913 (Picatinny) rear receiver interface (SIG MPX, MCX, Rattler, Rock River LAR-PDS, and others)
Maximum Width	1.2"
Length	9.25"
Strap Width	1.0"
Weight	10.0 oz
Material	6061 aluminum strut, steel hinge
Color	Black
Included	Complete assembly, adjustable nylon strap

Frequently Asked Questions

What firearms does the FS1913A01SB fit?

This brace is designed for any firearm platform with an M1913 Picatinny interface at the rear receiver. Common matches include the SIG MPX, SIG MCX, SIG Rattler, and Rock River LAR-PDS. If your AR pistol or other platform has a Picatinny rail at the back of the receiver, this brace will mount there — but always verify your specific platform for compatibility before purchase.

Does this brace come fully assembled?

Yes. The FS1913A01SB ships as a complete assembly ready to install onto your M1913 interface. It also includes an adjustable nylon strap to secure it to your forearm.

How much does the FS1913A01SB weigh?

The brace weighs 10.0 ounces, making it a lightweight option for AR pistol builds where every ounce matters.

Can I fold this brace when it's installed?

Yes. The FS1913A01SB is a side-folding design with a steel hinge that locks securely in both the folded and extended positions, allowing you to collapse it for transport or tight spaces and deploy it quickly when needed.