Ehh I don't care for .22LR AR style guns. Even with a 16" barrel they feel too cumbersome and bulky for a .22. I'd definitely get a H&K MP5 .22LR. They have two models, the A5 and SD. A5 being the classic MP5 with a "compensator" that looks like a suppressor, and the SD is the Navy Seal-looking integrated suppressor MP5. Both have 16" barrels and look waaaaay more fun than just another AR. Plus, a .22LR MP5 probably sounds pretty close to an actual suppressed 9mm.