We are excited and pleased to introduce the MEAN EndoMag™. This product is a magazine insert that converts your Gen 2 or Gen 3 5.56/.223 PMAG® housing into a 9mm magazine to use with a standard AR lower and 9mm upper of your choosing with a Glock or Colt variant 9mm BCG.

Here is a list of features the Mean Arms 9mm Magazine Adapter are as follows:

• Quickly and easily change calibers from .223/5.56 to a caliber associated with the EndoMag in a Magpul 30-round 5.56x45 PMAGsⓇ (Gen 2 and 3)
• Functions as a magazine!
• No magwell adapter needed!
• Keep your standard 5.56 Multi Caliber lower receiver!
• Comes fully assembled.
• No tools required.
• Keep all your PMAGsⓇ in use, no need to buy additional or specific 9mm magazines.
• Keep your muscle-memory reload-training the same between calibers! Same magazine, same draw, same feel.
• No learning curve when reloading because it is the same magazine you already use!
• Use most of your PMAGⓇ accessories: i.e. mag pouches, storage racks, decals, caliber indicators, etc.
• Not a picky eater. Shoots all 9mm munitions. Hollow points included.

• No modifications to your 5.56x45 lower!  Changing calibers is now simply a complete 9mm upper for your AR platform. No nuts, no bolts, no drilling, no bull.
• Last round bolt-hold open feature, just as an AR15 should function.
• Built-in ejector designed to perform under intense conditions.
• Convert your 5.56x45 PMAGⓇ to 9mm in seconds, and easily convert back to 5.56 without damaging your PMAGⓇ. No permanent changes to anything!
• Specially formulated polymer.