Tarvis
Member
DO NOT sell your other rifle to buy an upper. If you can't afford an upper right now, save up and buy one in the future.
I don't know much about 22lr conversions and uppers, but honestly, the conversion shooting "dirty" isn't a very good reason not to get one. ARs are fairly dirty in the first place, but you should clean it regularly anyhow; my buddy cleaned his M16 3 times a day when he was in Iraq. I do know that the proper twist for 22lr is 1-12, which means standard AR barrels will over-twist 22lr.
I don't know much about 22lr conversions and uppers, but honestly, the conversion shooting "dirty" isn't a very good reason not to get one. ARs are fairly dirty in the first place, but you should clean it regularly anyhow; my buddy cleaned his M16 3 times a day when he was in Iraq. I do know that the proper twist for 22lr is 1-12, which means standard AR barrels will over-twist 22lr.