Thank you all for the time in looking and helping out a Rookie
I am pretty sure I know the awnser to my question, how-ever after searching around everywhere on the site I havent found any thing concrete.....It is my understanding that the standard barrel diamiter is .750 correct(where the gas block is)? I am asking this question concerning the Del-ton 16inch m4 kit....plan on getting the kit and change out to a lo-pro gas block(found a good deal on one and want to buy it)...Well thanx for your time all I appreciate it. Hunter121
Edited to make more SENSE!