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G20 Mag Extension 10MM

(21 reviews) Write a Review
SKU:
GL20-MAG-EXT-20

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SKU:GL20-MAG-EXT-20

Info

SKU:
GL20-MAG-EXT-20

Description

  • G20 / 40 Mag Extension 10MM for Glock 10mm
  • Now with Dot matrix
  • +5  Capacity
  • 6061 T6 Aluminum
  • Black Anodized
  • Comes with NEW Spec improved spring 12 Coil +10% (3/20/25) and custom SLR machined follower
  • Not for 10 round mags

Note : Loader should be used to load mags to full capacity. First few times will be difficult by hand until follower breaks in.

 

 

 

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.

DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks registered by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither SLR Rifleworks, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com

21 Reviews

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  • 4
    Great! But....,

    Glock 20 mag extension is really nice it feels and looks fantastic. They were out of stock so I signed up for the alerts on when it would be available A few months go’s by & Once I saw that SLR email in my inbox I dont think I ever bought something so fast. Definitely worth it. 15 rounds of 10mm is cool. But 20 is even cooler. The one downside/ complaint that I had was there was no instructions.. I’ve never taken a glock mag base plate off before and didn’t know exactly what was to go in the new extension. I did have to do a search for it on YouTube because.. I was clueless. Some instruction would be nice. Other than that, it’s major, major go. Looking forward to the magwell purchase when it becomes available.

  • 5
    G20-G40 Mag Extension

    Great Mag Extension really well made and comes with the Follower and Extended Mag Spring, I was able to fit the 20 rounds with no issues, Liked it so much I am Waiting for them to be back in stock to order a Second one, Highly recommend to anyone looking for a quality mag extension for your G20-G40

21 Reviews

  • 4
    Great! But....,

    Glock 20 mag extension is really nice it feels and looks fantastic. They were out of stock so I signed up for the alerts on when it would be available A few months go’s by & Once I saw that SLR email in my inbox I dont think I ever bought something so fast. Definitely worth it. 15 rounds of 10mm is cool. But 20 is even cooler. The one downside/ complaint that I had was there was no instructions.. I’ve never taken a glock mag base plate off before and didn’t know exactly what was to go in the new extension. I did have to do a search for it on YouTube because.. I was clueless. Some instruction would be nice. Other than that, it’s major, major go. Looking forward to the magwell purchase when it becomes available.

  • 5
    G20-G40 Mag Extension

    Great Mag Extension really well made and comes with the Follower and Extended Mag Spring, I was able to fit the 20 rounds with no issues, Liked it so much I am Waiting for them to be back in stock to order a Second one, Highly recommend to anyone looking for a quality mag extension for your G20-G40

  • 5
    Just Awesome

    The fit and quality are awesome.

  • 5
    G20 Mag Extension

    I’ve used several different 10mm mag extensions that fall short of operating properly. This extension matched with the magwell in my Glock 40MOS is THE answer to carrying more rounds in the bush reliably.

  • 5
    Glock 20/40 10mm mega extension

    fits factory glock magazines and most aftermarket magazines. I myself have it on the ETS 15rd Magazine and I will say the quality is better than other builders extensions. there is a very tight tolerance so you know the product is going to stay in place during even most rigorous zhooting exercises. I also have 1000rds without one feeding issue after installing. I stand behind this product 100%

  • 5
    Great quality not really +5

    It is a great made piece, great quality. Easy replacement. Only thing was for the 10mm it is definitely a +4 not a +5 unless someone like Hulk fit that last one in there lol. SLR does it right though!

  • 5
    Mag Extension

    Had zero problems installing it on a factory mag. Was able to get all 20 rounds in the magazine. Took it to the range and it fed flawlessly all day.

  • 5
    GLOCK 20 MAG EXTENSION 10MM

    The hardest part of installing these magazine extensions is getting the magazine base off. Large Frame Glocks are MUCH harder than any others. Once I got the base off and removed the spring and follower, the new internals went right in . The fitting of the magazine extension requires a a degree of physical dexterity but nothing to break a sweat over. Once installed, they are solid and don't "pop off" if dropped with a full magazine. I like them and believe it is money well spent for the extra capacity and "style".

  • 5
    10mm magazine extension

    Fit and finish was perfect ,definitely will be purchasing more products from SLR.

  • 5
    Add some power to large frame Glocks

    I bought several of these, for my 10mm and .45 (more on that in a second). Got 20 rounds reliably in the 10mm with 400 rounds down flawless. It’s not listed to work with g21/41. And it doesn’t. Unless you are willing to modify the follower for the 45 acp which I did. Got me +3 45 acp. I’ve put 300 rounds through that too without an issue whatsoever. 16+1 in a 45acp is awesome

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