EndoMag™ 9MM (Restrictive States) features:
10-round compliant.
Functions as a magazine!
No magwell adapter needed!
Keep your standard 5.56 Multi Caliber lower receiver!
Comes fully assembled with a fixed baseplate to comply with state law.
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.
Ejector is built in to the magazine. 
Made in USA