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LMT gas block install

flyfisherman246

Private
Full Member
Minuteman
May 26, 2017
569
198
I have had good luck with spinning up bartlein's for MWS's with rifle length gas systems and SLR adjustable gas blocks. The SLR adjustable (and most other gas blocks) are lower than the MWS gas blocks. The rifle length gas systems work out pretty well because the extra length of the tube creates a lesser angle as it goes back towards the chamber end. When trying this with a mid length gas system with the slr and straight tube the shorter gas block creates a steeper angle as the tube goes to the chamber end. This does not fit in the upper receiver as is and the tube must be tweaked to fit. I am trying to avoid this all together by using the LMT gas block that comes with the barrels. They are pressed on and pinned. I have been able to remove them from the barrels, but can't think of a way to press them onto a new barrel and line up the gas port. Has anyone done this before or used an LMT gas block on an aftermarket barrel? Ive thought about just making the barrel to where the block will just barely slide on and then drilling and pinning it. Also thought about tapping the holes in the bottom and installing set screws.

Any ideas on how to install and LMT gas block on an aftermarket MWS barrel?
 
I don't see why spinning the barrel to where the gas block would barely fit, wouldn't work. You could use some emery clothes to shave what you need for it to slip on and then drill and tapping screws would be a solid idea. If you were to drill to alignment dimples for the gas block, it would make it that much more solid. 🤙

Semper fi
 
I would not pin it. If it is not done correctly you can mess up the accuracy of the barrel. I would go the cheap route and alter the gas tube. Post pics so we can get a better idea of what you are working with.