Sig Sauer P250/P320 Carry Large 9mm/.40/.357 Grip - Black. Please note that the package for these could be marked as P250 but the P250 and P320 use the same grip shell.
Note that Sig Sauer recently made an inline design change to the grip shells and slide catch levers.
This is a new OEM Sig Sauer P250/P320 Carry grip shell for 9mm, .40 S&W, and .357 SIG only. This will not work on .45 ACP P250/P320 configurations.
This grip shell can also be used to convert a Compact gun to a Carry gun. The only difference between the two is the taller height grip shell which uses Full Size magazines and keep the shorter barrel.