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SIG P320 21 round magazine
Description
Specification
Description

This is a factory SIG P320 21-round magazine in 9mm.

This also fits full-size SIG P250 and M17 pistols.

Featuring precision-engineered steel construction, this magazine promises unmatched durability and performance. Capable of holding up to 21 rounds of 9mm ammunition, this is the best magazine for P320 pistols.

This P320 magazine also features quality SIG components, such as an anti-tilt polymer follower, precision-wound steel spring, and a textured plus 4 round grip extension. The polymer base pad can be removed easily when needed, making any cleaning or maintenance very simple.

If you’re looking for an effective upgrade to beef up your P320/P250 pistol, this magazine is just what you need. Pick up a few of these P320 21 round magazines at The Mag Shack!

Specification
UPC

798681555253

Manufacturer Part #

MAG-MOD-F-9-21

Brand

Caliber

Capacity

Color

Customer Reviews

Based on 50 reviews
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C
Craig W.
Products Received

All good!

M
Mark B.
Great customer service

I initially bought Pro Mag versions to fit my P320 as well as my CMMG Banshee M17. They did not work properly with either of these firearms. I called in and they changed them for Sig versions with no issues. Great Customer service!!!

d
david l.
21 round Sig P320 magazine

Love the new mag and the Sig P320 full size. I can now load a full box of shells with the two 17 round magazines that came with the pistol along with the 21 round Mag Shack magazine and not struggle to load the last couple of rounds in each mag.

C
Craig F.
As expected

The mags fit the Sig P320 and fed rounds flawlessly.

E
Edmond L.

Sig Sauer P320, P250 9mm 21 Round Extended Magazine