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Posted: 4/16/2008 6:13:39 AM EDT
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I am installing a Vltor lo-pro gas block to go under a free float handguard. What, if anything should I do to prep the barrel for installation? I have the set screw type, should I drill dimples in the barrel, or create a “flat”? What is the best way to protect the bare areas of the barrel left by the standard FSB (BM doesn’t park. underneath)? Would a good high temp spray paint work? Is there an easy way to ensure it is installed straight? How do you ensure the gas ports are lined up correctly? |
| I removed the front sight on my RRA to install a larue handguard. I basically put a nice coating of oil on the barrel forward of the sight and in between the two rings and tapped it forward with a plastic hammer. I didn't notice any scratches to the barrel. As far as the set screw, I'm not sure because I reinstalled the sight. The pins index on cutouts in the barrel so that's how alignment is insured with the standard A2 sight. |
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I made a jig for drilling the dimples but you can use an eye ball and the gas block to do the dimples. www.jobrelatedstuff.com/forums/topic.html?b=3&f=118&t=354620&page=1 Pinning is also a good idea. |
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