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Posted: 10/24/2008 1:10:29 AM EDT
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Okay, I;ve been wanting to install a longer railed forend on my AR; I currently have a 7" Troy MRF-C and I want to install a 12" MRF-R; my upper is a RRA HBAR carbine and I want to know which would be the proper diameter gas block to use; my concern is that the standard .750 gas block will not fit (becausethe arrel is an HBAR), so which company sells the right gas block for my barrel? Yes, I know someone has already asked that question, but I don;t feel like wading through hundreds of posts just to get the answer in plain single, American English... Something a knuckle-dragger like me can understand. |
| A .750 should work on any barrel that's not a light weight pencil barrel or bull barrel. I would call RRA & ask them just to be certain. .750 is the standard diameter at the gas block location for most barrels other than the two I mentioned in the first sentence. |
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You can "shave" down your fixed front sight, take a dremel and lop off the upper part, to make it short enough to fit a quad rail over. I feel I may go that route because it seems that all the low profile gas blocks are held on by set screws and I'd rather have something pinned in there like the fixed front sight was. |
I like the look too. Well, as much as you can see with it hidden under a handguard.
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