Description
The SB Tactical FS1913 is built for shooters running bufferless pistol platforms — SIG MPX, MCX, Rattler, and any other firearm with an M1913 Picatinny interface at the rear of the receiver. Because it mounts directly to that rear rail rather than threading onto a receiver extension, it works across a wide range of platforms without requiring an AR-style buffer tube or any adapter hardware.
The brace uses a strut design that folds to the left side of the firearm. Left-side folding keeps the charging handle and ejection port clear, and in the folded position the overall package shrinks considerably for transport and storage. When you deploy it, the steel hinge locks the strut positively in the extended position — there is no perceptible play when it is open and in use. The same hinge detents in the folded position as well, so it does not flap loose while the firearm is being carried or stored. A pull-through deployment system lets you bring the brace into position without having to press a separate button or lever.
At 10.5 ounces, the FS1913 adds meaningful but manageable weight to a compact platform. The assembly ships complete and ready to install — no additional hardware or subcomponents are needed. For a shooter who wants a folding rear assembly on a Picatinny-equipped pistol without building around a traditional buffer tube, the FS1913 is a direct and purpose-designed solution.




