ETS Magazine for the SIG P320 - 21 Round
The ETS Magazine for the SIG P320 is a 21-round extended pistol magazine built for the SIG Sauer P320 and P250 in 9mm. The translucent, creep-resistant polymer body gives you an instant visual round count, while the anti-tilt polymer follower and high-tensile stainless steel spring keep feeding consistent under hard use. A removable floor plate makes cleaning straightforward, and the base is interchangeable with the rest of ETS's 9mm double-stack lineup. It's a solid pickup for range work, competition stages, or anyone running a P320 who wants more capacity on tap.
In stock
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- SKU
- SG9-320-21
$24.26
Description
Features
- 21-Round Extended Capacity — Adds four rounds over the factory 17-round full-size P320 magazine for fewer reloads at the range or in competition.
- Fits SIG P320 and P250 9mm — Drops directly into 9x19mm SIG Sauer P320 and P250 platforms with full lock-up and reliable feeding.
- Translucent Polymer Body — Advanced impact-resistant polymer lets you verify round count at a glance without dropping the mag.
- Creep-Resistant Construction — The polymer formulation resists deformation under long-term spring tension, so loaded mags hold their shape in storage.
- Anti-Tilt Polymer Follower — Black polymer follower stays square in the body for consistent feeding from the first round to the last.
- High-Tensile Stainless Steel Spring — Heat-treated stainless spring delivers reliable cycling and long service life.
- Removable Floor Plate — Tool-free disassembly for fast cleaning and maintenance.
- Interchangeable Base Plates — Base plate is compatible with the rest of ETS's 9mm double-stack magazine line.
- Made in the USA — Manufactured by Elite Tactical Systems with a lifetime warranty.
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Customer Reviews
Top customer reviews
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Excellent and easily see bulletsHave never had a single issue shooting thousands of rounds. Awesome and when stress hits you in emergency situations being able to see your rounds can help.
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Very SatisfiedBest price anywhere that was in stock. Delivery was quick with Fedex.
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Trash!!!!Absolutely awful did not feed once just garbage taking up space
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80-20Never had an issue with ETS mags until now. Not a bad issue but when the mag is full it does not want to eject when pressing the mag release. I’m guessing the mag lock notch is too deep. Something I’ll work out.
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Terrible magsBought 2 of these mags neither of them function properly. Both mags cause the slide to lock back after every round. Not good
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