SKU: SI-FSA-S-STAB
UPC: 793811767148
MPN: SI-FSA-S-STAB
The Strike Industries FSA Single Folding Brace in black is a single-side folding stabilizer built for pistol-caliber carbines and pdw-style AR-15 builds where length and pack size matter. It mounts directly to a rear-facing 1913 Picatinny rail using an M5 screw and locking plate, then folds to the left without any reconfiguration, button press, or detent fuss. At 11 oz, it adds minimal weight to a compact platform while keeping the firearm shootable one-handed. Shooters running short, packable setups will recognize the FSA brace as a way to trim overall length without giving up a solid index point. It works well alongside other stabilizing braces in a compact build.
The headline upgrade is the hinge: Strike Industries moved from aluminum to a strengthened steel hinge, which produces a positive, tight lock with minimal play whether the brace is extended or folded. The base, adapter, and strut are machined from 6061-T6 aluminum, while the stabilizer ends use a custom high-strength polymer. Folded, it adds just 0.8 inches (20.30mm) to overall length; deployed, it extends 9.09 inches (230.8mm) behind the rear rail. A QD sling point sits at the 6 o'clock position for sling attachment. Mounting torque is 40 in/lbs on aluminum rails and 35 in/lbs on polymer rails. The single-side fold deploys quickly and locks hard, which is what you want from a folding mechanism that has to survive repeated cycles.
This brace fits the smc Bravo Chassis, CZ Scorpion-pattern pistol-caliber carbines, and AR-15 pistols that accept a rear Picatinny rail. If you build truncated platforms for range work, vehicle storage, or a discreet pack, the folded 0.8-inch profile makes a real difference in case fit. The steel hinge also holds zero better under hard use than aluminum-hinge designs in this class. Pair it with a matching pistol grip and a rear rail adapter to finish the build. Browse our broader selection of grips, pads, and stocks and stock adapters to complete your setup.
The FSA Single Folding Brace mounts to a rear-facing 1913 Picatinny rail using the included M5 screw and locking plate. Torque the M5 screw to a maximum of 40 in/lbs on aluminum rails or 35 in/lbs on polymer rails for a secure fit.
It folds to the left side only. The single-side design folds and deploys without any reconfiguration, button press, or detent release, and the strengthened steel hinge locks tight with minimal play in both the folded and extended positions.
Folded, the brace adds roughly 0.8 inches (20.30mm) to overall weapon length. Deployed in the operating position, it extends 9.09 inches (230.8mm) behind the rear rail, per Strike Industries specifications.
Strike Industries lists compatibility with the SMC Bravo Chassis, pistol-caliber carbines such as the CZ Scorpion, and PDW-style AR-15 builds. Any platform with a rear-facing 1913 Picatinny rail will accept the M5 screw and locking plate mount.
The base unit weighs 11 oz. With the optional cheek riser installed, the weight rises to 12.41 oz. That keeps the brace light enough for compact pistol-caliber and AR pistol builds where overall mass matters.
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