The SIG Sauer factory MCX caliber conversion kit allows you to change the caliber and barrel length of your SIG Sauer MCX. This Caliber Conversion kit is a genuine factory SIG Sauer part so you can rest assured that the barrel will fit and function in your MCX just as it would had it left the factory that way. ALL NFA RULES APPLY!!!

Specifications and Features:
SIG Sauer Factory MCX Caliber Exchange Conversion Kit CALX-MCX-11B-556
5.56 NATO
11.5" Barrel
Kit Includes New Barrel Assembly
Matte Black
Note: ALL NFA RULES APPLY!!!

Fits:
SIG Sauer MCX
Note: ALL NFA RULES APPLY!!!