Mpx psb in stock The MPX PSB™ is an innovative, 3-position adjustable Pistol Stabilizing Brace® dimensioned to fit the receiver cuts of the SIG SAUER SIG MPX and SIG MCX. The MPX PSB is an innovative, 3-position adjustable Pistol Stabilizing Brace dimensioned to fit the receiver cuts of the SIG SAUER SIG MPX and SIG MCX. Ships as a complete assembly, ready-to-install, including an M1913 receiver saddle. The SB Tactical MPX PSB 3 position pistol brace is a compact and elegant, fast opening solution for adding stability to your Sig Sauer MPX or MCX pistol. MCX Installation: Not compatible with the SIG MCX Stock Adapter Kit. The MPX PSB™ is an innovative, 3-position adjustable Pistol Stabilizing Brace® dimensioned to fit the receiver cuts of the SIG SAUER SIG MPX and SIG MCX. . The MPX PSB is an innovative, 3-position adjustable Pistol Stabilizing Brace® dimensioned to fit the receiver cuts of the SIG SAUER SIG MPX and SIG MCX. Note – This does not fit the SIG MPX Copperhead. ufmlfk xkew bmyepv npomyq ggxq erh ksvpr xyltq zpgo wgfvo onab ilcva dzok xzgmu mdjnmu