im trying to swap out the bushmaster free float with a quad rail. is there a trick to this or am i retarded? it appears to be a simple twist off unit with nothing to interfere with the gas tube. could it just be its to tight?
is there a way to add rail covers to the tube? can i add rails to the tube using the slots provided?
is there a way to add rail covers to the tube? can i add rails to the tube using the slots provided?

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