Armory Craft offers everything that you need to turn your Sig Sauer P320 FCU into an X5 TXG Legion pistol.  We offer the complete slide assembly, as well as the TXG grip module and magazines. 

Be sure to check out our wide selection of premium Sig Sauer P320 dual-adjustable triggers, magwells, base pads, extended magazine release buttons and sport takedown levers, as well as premium accessories for the Sig Sauer P365, P220, P210, P226, P228, P229 and M11A1 handguns. 

Sig Sauer P320 X-Five X5 Legion 9mm Complete Full Upper Slide Assembly