Springer Precision extended capacity mag extensions for Sig Sauer P320 45 cal. and XTEN are CNC machined from aluminum and hard anodized for a long service life.  The unique locking mechanism allows a very solid attachment with a simple backing out of the discrete set screw. Requires modification to the follower. Extra Power spring included.

Installation instructions for 10mm

*We include a 1/16 hex driver that makes installation and removal a breeze.*

**Fit up to 19rds 10mm or 13rds .45cal**

1.52 oz

Due to design variations, Springer Precision cannot guarantee compatibility with any other manufacturer’s aftermarket magwell, unless otherwise specified. Please email us with any questions.