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. MCX Installation: Not compatible with the SIG MCX Stock Adapter Kit. You must have a genuine SIG MCX LOWER RECEIVER for compatibility.

Features :

• 3-postion Adjustable
• Dual Compatible with SIG MPX and SIG MCX (Excluding SIG MPX Copperhead)
• Complete Assembly, Ready-to-install, with an Integral M1913 Adjustable Housing