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Old May 22nd, 2018, 13:06   #2
Katipunero's Avatar
Join Date: Nov 2016
Location: Toronto
Any of the RA-Tech bolt carriers will require some sort of modification (filing/grinding) in specific areas, depending on the tolerances on your rifle.

RA-Tech does not have a good reputation of working, out of the box parts. If you're new to gas guns and want to play more than tinker, I would suggest in my opinion to stick to the stock bolt carrier, or a new stock bolt carrier rather than a RA-Tech one.

If you like to tinker and are open to the idea of grinding and modification, then get the RA-Tech bolt carrier.

There is no aftermarket bolt carrier for the WE m4 that is indestructible; the steel will wear out no matter what unless you get some sort of custom cnc machined bolt carrier with high-quality, heat treated carbon steel.
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