The immense popularity of the SIG P320 X has been centered around the modularity and unique design allowing the user to switch the entire lower frame on the firearm and caliber since the firing group is the actual serialized portion of the firearm. Install your P320 fire control unit into this Grip Module Assembly to convert to a P320 X chambered in 9mm, .357 SIG, or.40 AUTO. Requires the 9mm, .357 SIG and .40 AUTO slide and barrel.

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