The 80% Sig compatible fire control unit (the part considered the firearm) is compatible with Sig P250, Sig P320 and the EXO-1 Chassis system. Your FCU can be made into a 9mm, 40 S&W, 357 SIG and 45acp (with slight modification). These FCUs are compatible with current p320 drop-safe upgraded parts.
Operations Required to Finish:
Bend Slide Rails
Trim Rails to Size
Jig and Tooling Sold Separately
Sig Sauer P320
Sig Sauer P250
EXO ONE (X01)
Made from 316 Stainless in the USA
Please read our return policy before ordering.