I am looking to make a dedicated .22 upper on the cheap. I already have the barrel and .22 kit, now all I need is the upper receiver and charging handle. I am not looking for Colt or anything expensive, I have very little money invested in what I have so far and I want to do this as inexpensively as possible.
Again, I only need the upper receiver (no barrel etc) and a charging handle. A flat top receiver would be my preference, but an A1 or A2 wouldn't be out of the question either.