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Posted: 12/8/2011 2:10:56 PM EST
Hi I'm starting a 6.8 build and I'm having trouble finding the right handguard. Heres what I'm working with:

MEGA billet upper
16" Bison Recon barrel, Mid-Length gas tube and low-profile YHM gas block.

I'm looking for a handguard that will give me a continuous top rail, and cover the gas block. I like the ones from DD, YHM, and Larue.. but not sure what length to get.

Thanks for any help, Scott
Link Posted: 12/8/2011 2:26:10 PM EST
[Last Edit: 12/8/2011 2:26:56 PM EST by nightdh]

My 6.8 from Bison(18" mid-length), Troy TRX Extreme 11"(11 1/4" actual) covers past the gas block 7/8". You will need an 11" or rifle length(12") rail to completely cover your block.
Link Posted: 12/8/2011 2:27:04 PM EST
an 11" will cover a mid length gas system

Not sure if mega uppers require something different for rail mounting. I may be thinking of something else
Link Posted: 12/8/2011 2:43:06 PM EST
11" as everyone else stated is correct for Midlength.. 10" for positive coverage over Carbine and a shaved FSB

The YHM low-pro for example that I got is just about 1" in length..
Link Posted: 12/8/2011 3:03:32 PM EST
Thanks for the info, I think I'm gonna go with the yankee hill diamond in rifle length.
Link Posted: 12/8/2011 4:07:39 PM EST
I just put a rifle length YHM diamond on my carbine the other day. It covers out about four inches past a shaved down FSB, carbine length. Looks sweet too.
Link Posted: 12/10/2011 12:58:26 AM EST
Doesn't gas blow back in your face without the charging handle?
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