I just have a basic wrench for the castle nut and flash hider. The rail came with the barrel nut and wrench to put it on. Everything was really simple once I was able to get the pins free from the gas block.
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I definitely can recommend spraying the pins on the gas block with PB Blaster or something like it. I tried to remove mine at first with out it and they wouldn't budge. I let them soak over night and they punched out with no problem. The barrel nut is a pain to remove though. I ended up using a...