How long, is too long?

[jtischauser]

What's the worst that could happen? Ruin a handguard that's gonna get abused?

 

[Chambers]

Yeah...I say run it and don't worry about it.

Some comps, most notably the Titan, direct some gas backwards. That would probably be the hardest one on a hand guard.

 

[mike cyrwus]

My hand guard comes to the peel washer not quite to the ports. Do you see any cause for concern?

no

 

[Wall]

What's the worst that could happen? Ruin a handguard that's gonna get abused?

It could posssibly affect the performance of the comp

 

[RyanReed]

It could posssibly affect the performance of the comp

That is what I was thinking. It may also mess with the harmonics of the barrel, but hell, run it and see what happens.

 

[jtischauser]

Mine shot just fine the 30 or so rounds I shot trying to get the POS gas block adjusted. Never did work. I guess I gotta send it back. Must be sized incorrectly.

 

[RyanReed]

Which gas block?

 

[jtischauser]

It is one of those inexpensive KEIS models. The set screw in the gas adjustment seems really loose. I tried it on my Stag and my new build. I had it screwed almost all the way out to get it to lock the bolt back on my 18" rifle length gas and it never would lock back the bolt on my 16" middy. Sounds like the inlet home may be undersized?

 

[Chambers]

I'd put my money on misalignment.

 

[Wall]

I'd put my money on misalignment.

This is what I'd check as well. I know several folks using these with no problems

 

[RyanReed]

I agree - sounds like misalignment. Are you shouldered up against the barrel contour? I always go 1/16-1/8" forward of the shoulder to account for the handguard retaining cap not being there.

I got a Keis along with a Syrac and ended up using the Syrac on my rifle. The Keis looks good though. I especially like the set screw instead of pin to retain the gas tube.

 

[jtischauser]

She flows when I blow through it. It didn't work on two different barrels.. Side to side is lined up. How do you check back to front?

 

[jtischauser]

I agree - sounds like misalignment. Are you shouldered up against the barrel contour? I always go 1/16-1/8" forward of the shoulder to account for the handguard retaining cap not being there.

I got a Keis along with a Syrac and ended up using the Syrac on my rifle. The Keis looks good though. I especially like the set screw instead of pin to retain the gas tube.

So they don't need to be pushed all the way back? My keis has a roll pin no threads???

 

[RyanReed]

No, I always go a little bit forward and not up against the shoulder. About 3-4 full rotations on the Syrac had my LMOS running & locking back with Hornady Steel Match, XM193 & my handloads.

My Keis i just got 2 wks ago had a set screw to retain the gas tube. Maybe it is something new.

 

[RyanReed]

 

[Wall]

My keis has a roll pin no threads???

My Keis i just got 2 wks ago had a set screw to retain the gas tube. Maybe it is something new.

The threads are from a later revision, the earlier models had the roll pin

 

[jtischauser]

That roll pin sux!!! Gonna start a new thread about has block install.

 

[jtischauser]

Here is my new gas block install thread...

http://www.boomershooter.com/forums/index.php?/topic/7303-how-do-you-install-a-gas-block-on-an-ar15/

Please help a brother out.