[SHOT 2026] ATI Introduces the Schmeisser 50 Round Glock Mag Extension
Stopping by the ATI booth at SHOT 2026, I spotted something unusual and intriguing, the new Schmeisser S50 MLE, a new magazine adaptor which extends standard Glock mags to up to 50 rounds. Partnering again with Schmeisser, ATI will be selling the extension adaptors in the US with shipping set to begin in February,
In Glock 17 magazines the additional adaptor will increase the magazine capacity to 50 rounds while the Glock 19 magazines with the adaptor will boast 48 rounds. ATI note that they've tried the magazines in a number of full-auto guns and the extension is full-auto mated. The extension does not ship with a magazine body.
Essentially the new adaptor creates a quad-stack magazine. While adding slightly more length than a Glock 18, 32 round magazine the adaptor adds one third more capacity. The S50 MLE can be used in pistols and pistol caliber carbines alike.
The extension adaptor is mounted on the magazine with no tools and can be easily removed with the disassembly tool which is included in the kit. The additional extension isn't a permanent modification and the installation of the extension is reversible at any time. The kit also comes with a magazine loader to aid loading the extension adaptor’s four stack magazine.
The Schmeisser S50 MLE will be available from ATI in February with MSRP set to be $42.95. Check in at www.americantactical.us for updates.
Managing Editor: TheFirearmBlog.com & Overt Defense.com. Matt is a British historian specialising in small arms development and military history. He has written several books and for a variety of publications in both the US and UK. Matt is also runs The Armourer's Bench, a video series on historically significant small arms. Here on TFB he covers product and current military small arms news. Reach Matt at: matt@thefirearmblog.com
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Alright, I need one for a G43! 😂🤣How about this: I get a transferable MP-18I, (working on it). Convert the mag well from P-08 Luger to Glock, (Why Hugo Schmeiser didn't do this in the first place? Slacker). Add these and we're good to go. 🤔😏🧐😁
Does it come with a switch? 😂