XM 22 upper for AR15 rifles in 9mm or 22LR, undecided.

The XM 22 is a  upper receiver designed to fit most AR15 upper receivers. It uses side loading magazines with bottom ejection. This results in a larger ejection port and improved reliability.  At this time we may make this upper in 9mm instead of 22LR.   Price Estimated at $500 for a complete upper receiver.
This upper is still in development, a release date can not yet be given. The 9mm version would use  magazines To-Be-decided. We are in favor of Sterling mags at the moment.

Rhineland Arms