My HTAC arrived Thursday and I got it installed yesterday, I've read where some have gone in with little
or no pressure but mine is pretty snug, no fitting necessary but a vise, hammer and punch for sure.
With the Dawson front, it's a real nice set up, I only got to run 100rd's to pretty much dial it in.
I've got to shoot it some more to get used to to the extra air space in the notch, the sight picture is outstanding
along with an improvement in my desired POA - POI, shots have tightened up...I'm liking it.