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Posted: 6/24/2013 11:20:05 PM EDT
| Hello all. I have a DPMS sportical rifle that I have shot about 400 rounds thru it with only 1 malfunction that was related to ammo. The thing that concerns me though is that the gas block has a very slight amount of play to it. Is this normal or should I have a gunsmith check it? |
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I would say no its not normal. If the gas block moves out of alignment the rifle would not longer be semi-automatic.
It needs the gas to push the bolt back to cycle the rifle. It looks like the gas block is set with set screws that are on the bottom of the gas block. I would check and see if they have come loose under recoil. If they have you need to make sure the gas block is aligned and tighten the set screws. You should also use some thread locking compound to make sure that the screws don't come loss again. you will want to use Rocksett and not blue locktite. Blue locktite doesn't have the correct temperature range to work properly for the application of holding the gas block set screws in place. |
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Use red loctite.
If you ever have to pull the gas block screws, you can transfer heat with a torch to the screw to break the red loctite bond, while with rocksett, will most likely end up stripping the head out of the allen screws instead. Granted that red loctite bond break down at 600*, your never going to get the block that hot with live fire to break it down that way instead. |
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