meanzbullet Posted July 23, 2015 Share Posted July 23, 2015 My rifle has an SLR hand guard and the SLR gas block. They are made to work together but the fit is extremely tight. The gas block seems to be hitting the handguard during firing. As long as this is consistent will it have an adverse affect on accuracy? I am asking because the rifle is fairly accurate but not a tac driver. Link to comment Share on other sites More sharing options...
Shooter115 Posted July 23, 2015 Share Posted July 23, 2015 Except that contact is never going to be 100% consistent. I'd be busting out the 30,000 RPM "instant gunsmith" and make some clearance. Link to comment Share on other sites More sharing options...
polymerfeelsweirdman Posted July 23, 2015 Share Posted July 23, 2015 I don't know how the SLR handguard attaches and I am not sure where the two things contact each other but I am guessing contact is on the underside of the top of the rail and the top or the GB. Maybe if you reattach the handguard while applying some pressure upwards at the end of the handguard the deflection will help it some. Link to comment Share on other sites More sharing options...
meanzbullet Posted July 23, 2015 Author Share Posted July 23, 2015 It has a special barrel nut and the handguard slips over it and has a ciple of cross bolts. I will take a look at it and see if it can be moved over. There is very little clearance. Maybe .080? Link to comment Share on other sites More sharing options...
BitchinCamaro Posted July 23, 2015 Share Posted July 23, 2015 (edited) Give SLR a call. Sometimes the barrel-nut systems (of any mfg.) aren't perfectly cocentric with the barrel. They might just send you a new barrel Nut. Personally, I'm with Shooter115! Edited July 23, 2015 by BitchinCamaro Link to comment Share on other sites More sharing options...
MickB Posted July 23, 2015 Share Posted July 23, 2015 Definitely call SLR. First, clear the rifle, then clear it again. Then take the upper off the lower and place the top rail on a flat surface. The hand guard should run even with the top rail of the upper receiver. if it doesn't, you will see it very easily. If not aligned, remove the hand guard, reinstall, and using your flat surface, push down so upper and hand guard aligned - THEN tighten the bolts on the hand guard. Mick Link to comment Share on other sites More sharing options...
TISCHLJ Posted July 24, 2015 Share Posted July 24, 2015 Watching... I have had the same issue. New series 7 Slr clamp on adj gb..a great piece of work btw...and the Slr ultra light 15 inch hg...Also a great piece...With GB properly aligned and adjusted, still some contact at hg at what appears to be gb nut heads and screw at tension flap nut at gb adjust area.btw .750 gb area. Link to comment Share on other sites More sharing options...
billdozer Posted July 24, 2015 Share Posted July 24, 2015 I have the exact combo was the same way, they told me to relieve it on the gas block. I asked if they had shims or anything like that, nope they said grind the gas block. Link to comment Share on other sites More sharing options...
Pat Miles Posted July 24, 2015 Share Posted July 24, 2015 (edited) There is very little clearance. Maybe .080? .080" is just north of 1/10" and that should be very adequate. Edited July 24, 2015 by Pat Miles Link to comment Share on other sites More sharing options...
TISCHLJ Posted July 24, 2015 Share Posted July 24, 2015 My Dremel has been on the inside of the hg. Don't want to grind on screw heads...no easy access magnifier light and lense not easy to get in there. Not as much contact as it had at first but still some slight contact evident by pushing on bbl while holding hg...seems contact at lower and upper nuts. Link to comment Share on other sites More sharing options...
mpom Posted July 24, 2015 Share Posted July 24, 2015 If the contact is on the edge of the screw heads, grind away, as the allen wrench contacts the center of the screw. Even if contact is with top of screw, removing 10 or 20 thousands should not create an issue, as long as plenty of material is left for contact with allen wrench. Link to comment Share on other sites More sharing options...
Pat Miles Posted July 24, 2015 Share Posted July 24, 2015 My Dremel has been on the inside of the hg. Don't want to grind on screw heads...no easy access magnifier light and lense not easy to get in there. Not as much contact as it had at first but still some slight contact evident by pushing on bbl while holding hg...seems contact at lower and upper nuts. If you can push the handguard into the barrel with .080" clearance you should be looking into the cause of the flex. Link to comment Share on other sites More sharing options...
TonytheTiger Posted July 24, 2015 Share Posted July 24, 2015 I'm a little disappointed to hear a company like SLR has two coinciding parts that apparently won't work together without some grinding on the customers end.... Link to comment Share on other sites More sharing options...
billdozer Posted July 24, 2015 Share Posted July 24, 2015 That's what i thought. They told me it had to do with the threads on the front of the receiver. Link to comment Share on other sites More sharing options...
billdozer Posted July 24, 2015 Share Posted July 24, 2015 That's what i thought. They told me it had to do with the threads on the front of the receiver. Link to comment Share on other sites More sharing options...
soterik Posted July 24, 2015 Share Posted July 24, 2015 I found the SLR set-screw gas blocks provided more clearance than the clamp-on versions. Not much, but enough. Link to comment Share on other sites More sharing options...
meanzbullet Posted July 24, 2015 Author Share Posted July 24, 2015 Same set up, clamp on GB and ultra lite handguard. the rifle was assembled by SLR they are only a few miles from me. If work didn't always get in the way of my fun I would have already went by there. I wish I could get pictures of what I am talking about. maybe .080 is wrong, it is very close. It may not even be the problem but I want sub MOA and I can't seem to even get MOA. I am talking off a solid bench using a rest Link to comment Share on other sites More sharing options...
MickB Posted July 24, 2015 Share Posted July 24, 2015 If you are having clearance issues due to the screws, then you can get low profile button head screws from your local hardware store... Mick Link to comment Share on other sites More sharing options...
polymerfeelsweirdman Posted July 24, 2015 Share Posted July 24, 2015 I would still try installing it while pushing up on the HG as that is easily reversible while dremeling is not Link to comment Share on other sites More sharing options...
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