Hey guys! I'm on the market for a .22 rifle. I've been looking at the tactical .22s like (mp-15-22) and the ruger 10/22. I've also just heard about .22 conversions for ar15s, but I heard it makes your rifle a lot dirtier especially in the gas system. Basically what I'm asking is... Would I be better off getting a rifle dedicated for .22? Or would a conversion be okay? If I go the dedicated .22 route, I'm not looking for match accuracy, I just want a reliable and modular .22. Thanks for your input!