[Gun1]

Has anyone installed base pad extensions to their magazines? I'm wondering if you can install them on the Sig P320 21 round magazines and if they're generally reliable or more similar to ProMag?

 

[Phredee]

Has anyone installed base pad extensions to their magazines? I'm wondering if you can install them on the Sig P320 21 round magazines and if they're generally reliable or more similar to ProMag?

I have the same question after searching for 21 round magazines. Mine is a P320X5 Legion so I am watching out for the magwell too. I've seen on some sights where the extensions/base plates would work on a 17rd but not on a 21 rd. IDK the differences yet.

 

[ddc]

For USPSA I've used TTI+5 on the 17's and TTI+2 on the 21's over thousands of rounds.

Just for range fun I've stuck a TTI+5 on a 21 and it worked just fine.

Right now I've got a TTI+5 on a 15 rounder for my 320 compact. Why? Just because... lol.
It's currently just a nightstand gun and I didn't have any extra 17's or 21's.

All combinations have worked with no issues.