Hello I’m building an XM3 darpa clone and I’m trying to order the correct barrel from hearts website. I know it’s a 1:10 twist and 6 groove but what I don’t know is the profile of the barrel? Is it the m40 profile? Thanks
- Thread starter Jgrovem110
- Start date
Modified #7 just under .90 at the muzzle and finished at 18.5". The last few auctioned off had those specs and the only reason i know is because it was one of those short/practical darpa programs that for some reason never made it and it should have.
Great thanks
