New Carbine Build - Colt M4 Upper w/ Noveske 10.5"

[SHIVAN]

Pics to come.......

I just built up an upper using an old Colt M4 upper, and a new Noveske 10.5" SS barrel.

I had John prepare the barrel with a pin and setscrewed lo-pro gas block.

Using a LaRue 9.0 I have achieved the exact look I wanted, with a longer sight radius for the Troy backups.

Anyway, the one problem I have is that the gas block is not centered in the handguard when you look down the muzzle into the handguard.

Handguard was tightened to spec, though the # escapes me while I type this.

Should I disassemble it and check something? If so, what?

I am thinking that maybe the threads on the upper may be shorter on one side, maybe by just a fraction.

Or maybe the gas block is out of whack.

Or should I just shoot it and see if I have a problem?

[rob_s]

I had ADCO shave my FSB and install a Daniel Defense 9.0 over it on a Colt 6520 barrel ("pencil" 16" barrel) and the same thing happened. I don't know why, but it hasn't caused me any problems.

I was actually kind of pissed off at first, but since then I've shot easily 3,000 rounds through the gun without issue, so I'm unconcerned.

In short, I vote for shoot it and see.