Description
This is the factory-style Girsan Witness 2311 magazine, a 17-round 9mm Luger unit made from stainless steel with that bright silver finish. It's the exact mag the Witness 2311 was designed to run, so if you own the pistol and want a spare that feeds and locks just like the one that came in the box, this is the one to grab. Manufactured by Check-Mate in the U.S., it's built around the standard double-stack 1911 pattern that the whole 2011 world shares.
What the Girsan Witness 17rd Magazine Fits
One of the best things about the Witness 2311 is that it uses the same 2011-pattern magazines as pistols costing two and three times as much. That means this mag isn't locked to just one gun. It's compatible with the broad double-stack 1911 ecosystem, so it also works in Staccato, Springfield Prodigy, and other 2011-style pistols chambered in 9mm. If you shoot more than one gun on that platform, you can standardize your mags and keep things simple.
How the Stainless Witness 2311 Mag Is Built
Stainless steel construction gives you corrosion resistance and a slick, polished surface that helps full mags seat cleanly even under a little stress. Inside you'll find a polymer follower with an anti-tilt design and a durable spring, which is the combination that keeps rounds stacking and feeding right through the last shot. The removable floor plate makes cleaning and spring maintenance painless when it's time.
Why Owners Keep a Few on Hand
One magazine is rarely enough once you start putting rounds downrange. Whether you're running drills at the range, shooting a match, or just want a couple of loaded spares ready to go, having extras that match your carry or competition setup takes the guesswork out of reloads. This one polishes up nicely, drops free, and does its job without drama.
Key Specifications
- Manufacturer: European American Armory / EAA Corp (Girsan)
- Made By: Check-Mate Industries (USA)
- Manufacturer Part Number: 111002
- Model: Witness 2311
- UPC: 850020492671
- Caliber: 9mm Luger (9×19)
- Capacity: 17 Rounds
- Material: Stainless Steel
- Finish/Color: Silver Stainless
- Follower: Polymer, Anti-Tilt Design
- Floor Plate: Removable Polymer Base
- Fits: Girsan Witness 2311 and Standard Double-Stack 1911 / 2011 Pistols
- Length: 5.5 in
- Product Type: Handgun Magazine
What’s Included
- One Girsan Witness 2311 17-round 9mm stainless steel magazine
Frequently Asked Questions
What pistols does the Girsan Witness 2311 magazine fit?
It's the factory magazine for the Girsan Witness 2311 double-stack 1911 in 9mm. Because it's built on the standard double-stack 1911 (2011) pattern, it also works in other 2011-style pistols like Staccato and Springfield Prodigy chambered in 9mm. If your gun runs standard 2011-pattern mags, this one should drop right in.
How many rounds does this Witness magazine hold?
It holds 17 rounds of 9mm Luger. Paired with a round in the chamber, that gives you the classic 17+1 setup the Witness 2311 is known for. It's a full-size mag, so expect that flush-fit capacity rather than an extended count.
Is the Girsan Witness 2311 magazine made of steel or polymer?
The body is stainless steel with a bright silver finish for corrosion resistance and smooth insertion. Inside it uses a polymer anti-tilt follower and a steel spring for consistent feeding. The floor plate is a durable polymer base that comes off for cleaning and spring maintenance.
Who actually manufactures this Girsan magazine?
These are made in the U.S. by Check-Mate Industries, the same company that produces magazines for a wide range of 2011-platform pistols. That's part of why they're interchangeable across the double-stack 1911 world. You're getting a proven feeding component rather than a generic aftermarket copy.





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