MEAN Arms EndoMag® 9MM


  • Manufacturer: MEAN Arms
  • Model: EndoMag® 9MM
  • CALIBER: 9mm

In stock


  • Manufacturer: MEAN Arms
  • Model: EndoMag® 9MM
  • CALIBER: 9mm


he MEAN EndoMag® 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.

Made in U.S.A.


  • Quickly and easily change calibers from .223/5.56 to a caliber associated with the EndoMag in a Magpul 30-round 5.56×45 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.


  • Compatible with all New Frontier Armory 5.56 stripped uppers, forged and billet
  • Compatible with all slick side pistol caliber billet uppers
    • Note: LRBHO system in the upper must be removed
  • NOT Compatible with pistol caliber side charging receviers (PC-NRSC and C5-NRSC)
  • Not compatible with CMMG guard, contact MEAN Arms directly for CMMG Guard compatible EndoMags

PLEASE NOTE: Certain U.S. jurisdictions restrict firearm magazines sales. New Frontier Armory cannot process sales/shipments prohibited by law. A list of states and municipalities restricting firearm magazine sales is available here.

Additional information

Weight .3105 lbs
Dimensions 12 × 1 × 4.5 in


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