SIG SAUER MCX/MPX Minimalist Locking Folding Stock Black. Featuring a slightly shorter buttpad than the Minimalist Plus stock at 3.5 in. Specifications for SIG SAUER MCX/MPX Minimalist Locking Folding Stock: Manufacturer: SIG SAUER Gun Make: SIG Sauer Gun Model: SIG Sauer MCX SIG Sauer MPX Color: Black Fabric/Material: Aluminum Package Contents: SIG SAUER MCX/MPX Minimalist Locking Folding Stock SIG SAUER Infinite Guarantee What firearm models does the manufacturer say SIG SAUER MCX/MPX Minimalist Locking Folding Stock is compatible with? The manufacturer says that SIG SAUER MCX/MPX Minimalist Locking Folding Stock is compatible with SIG Sauer MPX SIG Sauer MCXSIG SAUER 8901410: MCX/MPX Minimalist Locking Folding Stock Black