Ok with yet another mass shooting up in the mainland I am starting to conisder the fact that if re-elected Obama may foucs more seriously on anti-gun legislation like he talked about. So in order to stay a little more low key I started looking at divresifying the uppers for my 2 AR's. The 7.62x39 is my first choice because of the amount of cheap ammo out there. Has anyone had any experiences any uppers chambered for this particular round? I looked at getting the PWS one, but also saw a YHM and Colt one on the internet. Thanks for all your input. And yes I know I could by an AK, but with the way things are prices are going up.