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Posted: 12/22/2012 5:17:03 PM EDT
| I bought an AR15 the other day and I want to replave the free float tube with a free float rail system, but the gas block looks like it might be welded or something onto the barrel. I have attached some pics. If anyone has any idea what the previous owner did and how to remove it that would be great. Thank you.http://i1303.photobucket.com/albums/ag159/JasonJen_Colson/photo1_zps5adced2f.jpghttp://i1303.photobucket.com/albums/ag159/JasonJen_Colson/photo2_zps6a0ac3b4.jpg |
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Remove the set screws (I did not see where it was pinned from the photos). Soak it in Kroil. Then give it a few rotational type twists to see if it will move, or tap with a soft faced hammer to see if it will move forward. If it still doesn't move, then try adding a little heat.
CY6 Greg Sullivan "Sully" SLR15 Rifles TheDefensiveEdge.com (763) 712-0123 |
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Your showing the top side, and on the bottom side should be two allen screws.
Now before you strip out the allen screw heads, know that you will need to heat the allen screws up to break down the loctite bond. The easy way to break down the loctite bond is to use a torch. Torch the area at the small allen screws with the flame moving until you smell a sweet smell, which is the loctite bond breaking down,then spin the allen screws all the way out. Now since loctite was used for the allen screws, bank that some of the loctite got between the barrel and gas block as well, so now heat up the gas block with a moving flame all the way around until you smell that sweet smell again, At this point, pull the gas block straight off the barrel, without twisting it on the barrel. If you start twisting the gas block, your going to start bending the gas tube, and may end up having to replace it as well. Lastly so you are not re-installing the gas block blind, before you even start to heat up for the screws to pull them, use a pencil and make witness lines between the gas block and the barrel shoulder. To add, when it all said and done, you can blacken the marred silver areas of the gas back to black with Casey Birchwood aluminum black. |
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