$87.99
21 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The ENDOMAG from Mean Arms solves a real problem for 9mm AR platform builders: how to use 5.56 magazines for 9mm without needing dedicated lowers or magwell inserts. This 3-pack gives you a clean solution that works with your existing Magpul PMAGs.
What makes the ENDOMAG different is its simplicity. Rather than adding adapters to the magazine well, Mean Arms engineered a drop-in insert that converts your Gen 2 or Gen 3 PMAG housings into functional 9mm magazines. The inserts are fully assembled and ready to use with no tools required. Each magazine holds 30 rounds of 9mm and feeds everything from budget training ammo to hollow points without issues.
Since these magazines use the standard 5.56 form factor, you keep your current AR-15 lower receiver completely untouched. Just swap in a 9mm upper with a compatible bolt carrier group (Glock or Colt pattern), and you're running 9mm with the same magazine you've always used. There's no magwell modification, no special adapter, and no learning curve on the reload. Your muscle memory transfers directly from 5.56 to 9mm because the manipulation is identical.
The ENDOMAG features a double-column, double-feed design similar to Colt pattern magazines. It comes with a built-in ejector for standard blowback systems and supports last-round bolt-hold-open function just like your 5.56 setup. Mean Arms uses specially formulated polymer throughout, and each conversion is backed by a lifetime warranty. You can convert your PMAG to 9mm in seconds and convert it back just as quickly with zero permanent damage to the original magazine.
This 3-pack includes three magazine inserts ready to go into your existing Magpul PMAGs (the magazines themselves are not included). The inserts come pre-assembled with no assembly required. The package fits any Magpul PMAG Gen 2 or Gen 3 housing, and you'll need a dedicated 9mm upper with either a Glock or Colt variant bolt carrier group to complete the setup. You keep all your standard AR accessories and pouches since the exterior dimensions match a regular 5.56 magazine.
Yes, the inserts convert existing Gen 2 or Gen 3 PMAG housings into 9mm magazines. If you don't already own compatible PMAGs, you'll need to purchase them separately. Once installed, your PMAG becomes a functional 9mm magazine ready for your 9mm upper.
Absolutely. Since the ENDOMAG maintains standard 5.56 magazine dimensions, it works in any AR-15 lower designed for standard magazines with no modifications or magwell adapters. All your existing mag pouches, carriers, and reload training translate directly to 9mm shooting.
The ENDOMAG is designed for Glock or Colt pattern 9mm bolt carrier groups in a standard blowback configuration. You'll need a dedicated 9mm upper to pair with your existing 5.56 lower receiver. Mean Arms also offers an ejectorless version for CMMG Radial Delay systems if that's your platform.
Most users report smooth operation right out of the box. Some shooters have noted that cycling 200+ rounds or following Mean Arms' break-in procedure can optimize initial function and address any minor friction from manufacturing tolerances. After break-in, they function reliably across all ammunition types.
| UPC | 855926007080 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 2100769 |
| Capacity | 30-Round |
| Quantity | 3 |
You must be logged in to post a review.
Reviews
There are no reviews yet.