The Sig Sauer Factory PCB kit effortlessly installs onto your Sig MPX or Sig MCX using the receiver's 1913 interface. Included is a forearm strap, enhancing stability for precise target shooting. Featuring a locking hinge mechanism, the brace securely fastens against the pistol when folded, preventing unwanted swinging movements when deployed. This kit ensures ease of use and reliability, complementing the versatility of your firearm platform.