I have a 20" Colt HBAR. It shoots excellent. I am thinking of having ADCO cut and rethread at 18". Exactly 2" less barrel would take the HBAR stamping off of the barrel and leave the other markings intact. The 20" is just too long and heavy of a package to me. I know 2" in length isn't going to make a world of difference, but I like the concept of it being slightly shorter and lighter. I have noticed that some 18" barrels have the gas port at mid length and others have it at rifle length. Do the barrels that have the port at rifle length have a standard size gas port or is it different than what would be on my 20"? In the future, I would like to get a can and the length would be more of an issue then. Also, I already have this barrel and the cost of a new 18" 1/7 chrome lined barrel is more than I want to invest to be 2" shorter. Has anyone here done this and did you have to modify the gas port?
If anyone from ADCO is reading this, about what would be the approximate cost ?