Glad I went with the 6945. Good info on that thread. Thanks.
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Glad somebody mentioned it and I found one. Definitely going to be running suppressed and I won't be feeding it Wolf / Tula or any other crap.
I do have one question, I really haven't kept up on the whole ammo / twist rate issue. If I shoot Lake City 55 gr. ammo am I going to have any problems?
I have a CQBR build with a SAW Colt 10.3 1/7 barrel and have had 0 issues with 55gr in terms of accuracy. I did get one of the batches of hot Independence 55 gr and got some nasty pressure swatches so I shot the rest of that out of my middie with no issues. On another note I do recommend at least trying an H3 buffer, it mellowed my Colt out a bit. I'm not sure of the gas port size, ( I think Ken Elmore spec'd this barrel from the Colt factory ) but the H3 works great.
While I would agree that my MK18 upper is over gassed, I haven't noticed much of an issue running suppressed with over 1k rounds down the pipe. Everything from wolf to 855.