Thank you for the info and the links. I checked out both links on the Compass Lake Engineering and White Oaks and I am leaning towards the Compass Lake. If it is good enough for the Marines it will work fine for me (plus I was in the Marines many years ago). I also was reading the post on how a Colt will not make a good match rifle. I am just starting into the highpower game and no expert yet, so will the Colt HBAR barrel shoot well enough for a beginning shooter? I ask a similar question when I was thinking about making my Garand a match rifle and was told not to spend high dollar on a Krieger barrel but instead go with a lower price Douglas or Wilson. They said until you become a better shooter you will not benefit from the Krieger barrel. So hopefully by the time I get better I'll be ready for a new better barrel for the AR. Also my Colt does not have a sear block in it so that should not be a problem. After I get the float tube done I want to get the triger work done. The post about the Colt not making a good match rifle noted the difference in the triger pin size. I think I've seen were you can still get a nice match triger job done for the Colt. I have $800.00 into the rifle with no work done. By the time I free float the barrel, get triger work done and upgrade to a match sights I think I'll be around the price of a RRA-BM CMP match rifle NIB. Well, once again thank you for the help and any more advice you all may have in the future.