Sig P239 Mag Extension or Extended Base Plate?

Does anyone know of an extended magazine or base plate extension for the Sig P239 in 357sig?

SIG made some 8rd P239-357 magazines for a federal agency. They're rather bulky and most of the folks have chosen to revert back to 7rd magazines.

You might try calling SIG to see if any are available.

Thanks for the info.