RexKramer Posted January 30, 2021 Share Posted January 30, 2021 Ok I'm an idiot with a side of moron, so I'm having trouble replacing the Mark III hand guard from my GMR-15 with a Smoke. My issue so far is actually getting the hand guard assembly off. I have the hand guard off, but when using the barrel nut adapter, I cannot get the nut to budge. What am I missing? Besides common sense. Thanks! Link to comment
CharlieD Posted January 30, 2021 Share Posted January 30, 2021 I believe they use loc-tite on the barrel but, so you may have to put a torch on it. Link to comment
RexKramer Posted January 30, 2021 Author Share Posted January 30, 2021 14 minutes ago, CharlieD said: I believe they use loc-tite on the barrel but, so you may have to put a torch on it. Thanks that was my next step. I just want to make sure I'm not missing anything to remove the hand guard once I get to the point of using the JP adapter nut tool with a wrench. Link to comment
Kokeman Posted January 30, 2021 Share Posted January 30, 2021 I prefer a heat gun over a torch. Link to comment
RexKramer Posted January 30, 2021 Author Share Posted January 30, 2021 26 minutes ago, Kokeman said: I prefer a heat gun over a torch. My overlapping hobbis provides me access to a heat gun from RC airplane covering. Link to comment
egd5 Posted January 30, 2021 Share Posted January 30, 2021 I took mine to a gunsmith for help. We didn't use heat, but he did have to get out a big pipe wrench to get some leverage on it. Of course he had a good vice to put it in too. Link to comment
RexKramer Posted January 30, 2021 Author Share Posted January 30, 2021 I was able to heat it up with a heat gun and pop it off (nearly literally... nothing nothing nothing BAM loose). My next conundrum is installing the Smoke hand guard. Easy enough, except when the barrel nut is installed it leaves the hand guard canted a little so the mlock slots aren't at 12/3/6/9. More like 11:30 or 12:30 for the top one as an example. I haven't torqued down on it hard, but I don't think it's really going to move much more as it's at the barrel already. Link to comment
Ming the Merciless Posted January 30, 2021 Share Posted January 30, 2021 3 hours ago, RexKramer said: I was able to heat it up with a heat gun and pop it off (nearly literally... nothing nothing nothing BAM loose). My next conundrum is installing the Smoke hand guard. Easy enough, except when the barrel nut is installed it leaves the hand guard canted a little so the mlock slots aren't at 12/3/6/9. More like 11:30 or 12:30 for the top one as an example. I haven't torqued down on it hard, but I don't think it's really going to move much more as it's at the barrel already. You will need to shim the barrel https://www.aeroprecisionusa.com/ar15-bar-shim-pack or https://bisonarmory.com/ar-15-barrel-nut-shim-set/ I prefer the Aeroprecision shims. Link to comment
RexKramer Posted January 30, 2021 Author Share Posted January 30, 2021 7 minutes ago, Ming the Merciless said: You will need to shim the barrel https://www.aeroprecisionusa.com/ar15-bar-shim-pack or https://bisonarmory.com/ar-15-barrel-nut-shim-set/ I prefer the Aeroprecision shims. Thank you yeah I was just coming to that realization. Link to comment
CharlieD Posted January 31, 2021 Share Posted January 31, 2021 No need to cut the shims, just put the shim between the barrel extension and the barrel nut. Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now