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Posted: 10/21/2004 7:43:29 AM EST
I have a Model 1 Sales Hbar upper and would like to put a rifle length forearm on it with a folding front sight. I would like to use the one made by Yankee Hill that is also a gas block. My barrel diameter after the FSB steps down about .030". I am wondering if that will keep me from using a clamp on FSB. Any ideas, or has anyone used a M1S upper with this setup?
Link Posted: 10/21/2004 10:11:30 AM EST
Shouldn't be a problem to use the YHM front sight/gas block with your HBAR barrel. The HBAR designation means heavy barrel under the handguard but no change to barrel diameter under the front sight base.
Link Posted: 10/21/2004 10:22:31 AM EST
The only thing that I am concerned about is that the barrel steps down to a slightly smaller size after the FSB (toward the muzzle)
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