This unit replaces the magazine base plate on the SIG P365 (10 round magazines) 9mm and .380acp.

This extension does not alter the capacity of the magazine.

It adds approximately 5/8" inch additional gripping surface (1/4" longer than factory extension) as well as enhanced ergonomics.

The enhanced griping surface also incorporates a texture which closely matches the frame of the firearm.

**Not for 365XL

Extension for 12 round P365 magazines see part PG-R12