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