Quote Originally Posted by 556sniper View Post
I have one if these 6945 cut down LE trade uppers I bought secondhand. It has very minmal wear which is nice, however mine does not cycle xm193, pmc xtac, m855 reliably. I have tried buffers H, HH and H3 to no avail. It will run hotloaded Fiocchi and Norma ammo.Sadly I am thinking that this may be a gasport issue. Hopefully I can get it figured out because its a neat piece of Colt
Thanks for replying! That almost certainly verifies that when these were cut down, they did not open up the gas port. This would likely make an excellent suppressor host, but other than that or having the port opened I wouldn’t trust these.