Sig Sauer P320/P250 9mm 21 RD Magazine


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Sig Sauer P320/P250 9mm 21 RD Magazine
This is a factory OEM Sig Sauer P320/P250 9mm 21 RD Magazine. This flush-fit Sig P320 / P250 magazine holds up to 21 rounds of 9mm ammunition in its solid steel construction. 

This full-size P320 magazine also has a plus 4 round grip extension compared to the standard 17 round magazine.

Featuring a smooth anti-tilt follower and steel feedlips, this Sig Sauer magazine will consistently feed without error into your full-size P320/P250 pistol.

If you’re in the market for a upgrade for your P320, pick up a few Sig Sauer P320/P250 9mm 21 RD Magazines from The Mag Shack.


More About the Sig Sauer P320
The P320 Full-Size offers a smooth, crisp trigger to make any shooter more accurate, an intuitive, 3-point takedown and unmatched modularity to fit any shooter and any situation. Its full-size frame is ideal for target shooting, home defense and any scenario where shootability and sighted accuracy are of the highest priority. This modular, striker-fired pistol features a full-size grip, full length slide, and choice of contrast or SIGLITE Night Sights.



Weight 7 oz




Customer Reviews

Based on 10 reviews
Jarrod B.
21 Round Fun Stick!

This is my second 21 round p320 mag so now I can burn through almost a whole box of ammo with just two mags. So with ammo prices what they are lately, I can go broke even faster! All kidding aside, it's a great mag and p320 is an excellent platform. It's such an easy pistol to customize to your liking. It's really quite addicting once you realize all the choices you have. You can truly create your own custom striker fire pistols. Looks like ammo prices are finally starting to fall a little so maybe I'll be able to afford to continue to fill this bad boy up!

Rick R.
Factory Mags

The Mag Shack is my Go To store when I need factory mags! Great prices.

Brian M.
Sig P320 21 rd.

Great magazine and can be used in lots of 320 modular combinations. Fits flush with Wilson Combat carry 2 module but extends a little with Sig compact grip module. I use them with all though! As always fast shipping and excellent service from 'The Mag Snack'. I have ordered quite a few items from and will continue to use 'The Mag Shack'!

Mark L.

Good price great service

joseph h.
Mag shack is Solid!

Great price and great ship time! No problems! I shall be ordering again!

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