Provide yourself with the ammunition you need to achieve your goals by using this Mean Arms EndoMag 9mm Magazine CMMG Version. One of the best features of these Magazines by Mean Arms is that they easily fit into your existing PMAG housing, allowing you to use your Glock or Colt variant 9mm BCG in combination with your 9mm upper. The only downside to this arrangement is that the magazine is unable to properly feed back. However, converting your 5.56/.223 PMAG housing into a 9mm magazine solves this problem, and means you get to use a wider range of calibers without the bulk or wait time that you'd experience with other conversion kits. Using these Mean Arms Extended Magazine Inserts will convert your 5.56/.223 PMAG housing into a 9mm magazine that you can use with a standard AR lower and 9mm upper of your choosing - you just need to buy an entirely new PMAG housing. There's no reason not to convert your 5.56/.223 PMAG housing and convert it into a 9mm magazine - it's easy with their step-by-step instructions on how to convert your Gen 2 or Gen 3 PMAG housing into a 9mm magazine - it's the only way to go about doing so. Specifications for Mean Arms EndoMag 9mm Magazine Ejectorless CMMG Version: Manufacturer: Mean Arms Color: Black Magazine Capacity: 10 Round Caliber: 9mm Luger Gun Model: AR-15 Quantity: 1 Additional Features: Ejectorless Condition: New Magazine Included: Yes Features of EndoMag 9mm Magazine Ejectorless CMMG Version: 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 Package Contents: Mean Arms EndoMag 9mm Magazine Ejectorless CMMG Version What firearm models does the manufacturer say Mean Arms EndoMag 9mm Magazine Ejectorless CMMG Version is compatible with? The manufacturer says that Mean Arms EndoMag 9mm Magazine Ejectorless CMMG Version is compatible with AR-15