What uppers are compatible with a mil-spec lower? I have a lower, what quality made upper can I add to my lower?
I know there are several out there now days. I have had a CMMG for at lest 5 years now. I have been very happy with it.
I have a CMMG .22 upper as well, it's a quality unit that works great. Black Dog makes some quality mags that work great too. http://blackdogmachinellc.net/AR15.22PRODUCTS.aspx
I have a tactical solutions 22lr upper. It comes with a threaded barrel, aluminum heat shield. And its super light. much lighter than my chiappa 22upper
Want to sell that? I'd be interested and I have cash. Otherwise, CMMG is probably your best choice. They have much experience designing and building .22lr uppers. They make and sell more than anyone else, I believe.