Schwansonite Posted April 27, 2011 Report Share Posted April 27, 2011 I know, I know everyone says go with troy but lets be honest.....I don't have a million dollars laying around. Start naming things that you have heard or seen go wrong with the magpul flip up sights! Is it possible for them to melt if they are on a free float barrel? Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted April 27, 2011 Report Share Posted April 27, 2011 Magpul discourages placing the MBUS sights directly on the rail provided on a gas block. The MBUS was designed to be mounted on a handguard picatinny.If you are so inclined... JD makes a raised rail gas block that looks like it wouldn't get so hot as to impede with the integrity of the MBUS. http://www.riflegear.com/p-771-jd-machine-upper-height-gas-block-308.aspx Quote Link to comment Share on other sites More sharing options...
survivalshop Posted April 27, 2011 Report Share Posted April 27, 2011 I would not put a plastic sight on any gas block .My Magpuls are very rigid & I have had a set on my 16" AR 308 for quite a while & they are solid shooters .I just picked up a set of the new Gen II & they are just as nice only lower profile in the folded down position.They are just intended as back up sights ,but on my 16" , they are the only sighting system & I don't have a problem with that. Quote Link to comment Share on other sites More sharing options...
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