SIG SAUER factory PCB kit installs easily on your SIG MPX or SIG MCX via the receivers 1913 interface. Comes with a forearm strap providing a more stabile target shooting experience. – Incorporates a locking hinge mechanism to securely fasten the brace against the pistol when not in use and locked when folded out preventing any swinging movements. – Model SIG MCX SIG MCX-SPEAR SIG MCX-SPEAR LT SIG MPX – Category Pistol Brace – Color Coyote Tan – Locking Yes – Folding Yes – Telescoping No – Adjustable Positions Fixed Length – Attachment Type M1913