SB Tactical TF1913 PSB Black Folding Triangle Stabilizing Brace

The SB Tactical TF1913 PSB folding triangle stabilizing brace is a low-profile, M1913 Picatinny-compatible brace engineered for shooters running modern pistol-caliber platforms. Designed and manufactured in the USA by a veteran-owned company, this complete assembly delivers a no-fuss installation onto any receiver with a standard Picatinny interface at the rear—think SIG MPX, MCX, or Rattler, but also compatible with RRA LAR-PDS and similar setups. The side-folding triangle design keeps your rig compact when stowed and deploys instantly when you need the stability.

What sets the TF1913 apart is its purposeful engineering: the advanced steel hinge locks solidly in both the folded and extended positions, so you get rock-solid support when deployed and a clean, compact profile when folded. The pull-through mechanism means no fumbling with levers or catches—just extend and lock. The rigid polymer substrate paired with a flexible arm cuff gives you both durability and comfort, while the included adjustable nylon strap lets you dial in the fit to your arm. At 10.9 oz and just 1 inch wide at the widest point, it won't bloat your overall package weight or profile.

This is a brace for the shooter who values simplicity and reliability over flashy features. Whether you're running drills at the range, building a truck gun, or setting up a pistol-caliber carbine for serious use, the TF1913 provides the support and consistency you need without compromise.

Key Features

• Complete assembly ready to install—no additional parts needed
• Advanced steel hinge design locks securely in folded and extended positions
• Pull-through deployment for quick, reliable engagement
• Low-profile triangle design minimizes overall footprint and weight
• Rigid polymer body with flexible arm cuff for durability and comfort
• Made in the USA by a veteran-owned manufacturer
• Includes adjustable nylon strap for personalized fit

Specifications

Frequently Asked Questions

What platforms is the TF1913 compatible with?

The TF1913 works on any rifle or pistol with an M1913 (Picatinny) interface at the rear of the receiver. That includes SIG MPX, MCX, and Rattler models, as well as Rock River LAR-PDS and similar firearms using standard Picatinny mounting.

Is this a complete assembly or do I need additional parts?

This is a complete, ready-to-install assembly. Everything you need comes in the box: the brace itself and an adjustable nylon strap. Mount it directly to your Picatinny rail and you're good to go.

How does the locking mechanism work?

The TF1913 uses an advanced steel hinge design that locks securely in both positions. When folded, it stays put. When extended, it locks solid. The pull-through design means deployment is quick and intuitive—no levers or buttons to fiddle with under pressure.

What's the difference between folded and extended length?

The brace extends to 9.5 inches when deployed. The exact folded dimension isn't specified, but the side-folding triangle design is engineered to be compact when stowed on your receiver.