ZEV Introduces (Expensive) OEM Glock Mag Extension

ZEV Technologies, known for their plethora of attractive and high-end Glock accessories, has released yet another attractive and high-end Glock accessory, this time turning their machining expertise to magazine extensions for OEM Glock magazines. ZEV had previously released a magazine extension for Magpul’s GL9 series of magazine which is potentially a moot product, as Magpul released a 21 round version just a bit ago.


Like the Magpul oriented release, the new base pad is extremely attractive, manufactured from billet aluminum. The body is milled with both aesthetic cuts and functional ones including flaring the bottom of the magazine for solid grip purchase and dimpling the bottom of the magazine when beating full magazines into battery.


Zev’s system consists of three parts, the extension housing, the bottom pad, and an high-power spring for function when loaded to its full 22 (17 + 5) round capacity for 9mm. For .40 S&W / .357 Sig shooters, additional capacity is rated as +4 due to the larger rounds. The extension will work with any standard capacity magazine for generations of 9mm Glocks (19, 17, 34, etc.) and their .40 S&W / .357 Sig counterparts.


The pad is available now directly from Zev and through their dealer network. Available colors including a visually striking red and standard anodized black. Retail is pegged at $44.00, not including the OEM compatible magazine. 

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • d

    Beautiful, but name one Zev product or service that is not expensive

  • Gus Butts

    $44 for an extension (not counting the base magazine) or a real 21 or even 27 round magazine for less than $20… hmmm….

    • El Duderino

      But…moar tackticul!

  • dan

    Taran Tactical and Arredondo extensions in similar sizes are $35-$40+ too. These ZEV ones are right in the same price range. And, let me say I have ZEV’s Magpul extensions and they are way easier to install and clean than the TTIs I have. Well worth the extra $5 to me.

  • Keiichi

    Still waiting on that 25+ round magazine for my 10mm Glocks, especially the MechTech…

    9mm gets all the cool toys :^(

    • somedingus

      This this this. I personally modded a couple of Korean 25 round mags for the Glock 21 for use in my 20, but they aren’t exactly reliable. I thought that OEM extended were mags a shoo in to happen now with the Vector being offered in 10mm, but I have heard zip as of yet. Anyone?

      • Keiichi

        I was able to get a couple of 15 rounders up to 20 with +5 Arredondo base plates, and some Dremal finagling to get them reliable…

        But yeah… a 25 or 30 round OEM 10mm mag would be a dream and a half…

    • dan

      holy crap that would be a heavy mag, lot of fun though

    • TCBA_Joe

      Could the Kriss mag extensions work? Aren’t the .45s and 10mms built off common architecture like the 9/40s?

      • Joe Gamer

        If you use a 10MM follower/magazine then I don’t see any reason this wouldn’t work, good enough for range time anyway IMO.

    • Wow!

      If you are willing, buy a spot welder, hydraulic press, and mini welder and array of metal for all for under $300, Make dies and stamp out your own magazines. It is super simple, the only requirement is knowing the demensions of what you want and being willing to not cut corners. Look up how AKs and MP5s are done by homebuilders for a general idea.

      • Keiichi

        I’d love to have a mini-fab shop, and a reloading room too… but it’s not so simple as that for an apartment-dwelling recent college grad like me… the space just isn’t there, and available funds are tough to come by… (I’d much rather buy ammo to practice with than tools and material for magazine production)

        • Wow!

          A really cheap option that I have done is to use PVC which is a thermoplastic meaning you can reshape it with just heat. Buy a mini vise, a file, and a heat gun (all should not cost more than $40 at harbor freight). Take a piece of wood 2×1″ used for fencing is good, and file it to magazine dimensions. Take a section of PVC pipe the length of your mag and cut a slot down the middle with a hacksaw. Use the heat gun to flatten it into a sheet. Then, mounted in the vise, use the heat gun to “melt” the edges and fold over the mandrel, slide it off form the feed lips, make a magazine spring and follower or canibalize from another magazine or parts, and install a floor plate (most easily done with roll pins, which harbor freight also sells for $5 pack of hundreds. Alternatively duct tape. If there is a will, there is a way, but of course it may be too much of a hassle to be worth your time. Just an option and an idea. I have made many plastic magazines this way myself relatively easily and very cheaply. Should take you a good 1 hour to do the first, and then 20-30 minuites per mag once you get the hang of what you need to do.

  • Vitsaus

    ZEV products/customizations are the firearms equivalent of Nigerian e-mail scams.

    • dan

      I have ZEV parts in two of my Glocks and like them a lot. How can you compare a company that sells a product to an email scam, which steals your money and identity? Your analogy doesn’t even make sense.

  • AC97

    It makes the Glock magazines uglier, so, yay?

  • Disarmed in CA

    “How to be a felon for under $50”

    • Dickie

      No one cares, your state sucks.

      • Disarmed in CA

        This is an awesome state, the government sucks.

        • DW

          Them government can’t elect themselves…

    • dan

      its an infraction, not a felony.

      • Disarmed in CA

        so far…

        • dan

          Lol, fair enough. Never hurts to be prepared for the worst case (and sadly, likely) scenario.

  • Wingbert

    Priced comparable to Taran

  • El Duderino

    I’m sure the boys at RECOIL will be on these like flies on poop.

  • guest

    but why?

  • WRBuchanan

    OK this would be great right up until you dropped it on the ground.

    Then it would look like ship, and your $44 investment would be ruined.

    I think it is great that people come up with new ideas, but they have to be good ideas.

    This product is for people who are just looking for some place to spend money.

    Maybe you should spend that money on a trip to a shooting school.

  • maodeedee

    It would be worth $44 dollars to have a 5 round extended mag for a 10mm Glock 20 IF it was guaranteed 100 percent reliable.
    But for a 9mm Glock 17 or 19, $44 dollars more or less will get you a 33 round Glock factory mag that IS 100 percent reliable with no assembly required, so what’s the point? As far as a 40 or a 357 it makes more sense but it’s still a lot of money.