Wow!
Talk about inside info.
Thank you
@Jack_L
My CRS PRT should be out of jail soon and I was thinking of doing a HRT type upper and switch the can between that and my mod2 14.5. I may have to mess around with the gas on the 11.5 to get things up to Knight’s standards and someone suggested that the mams would work better on the fbi hrt 11.5 clone ( related to ejection, etc).