Quote:
Originally Posted by Caleb
I will need pictures of what you are working with.
Generally you just insert the tube into the block, tap the roll pin in place and then set the block on the barrel lined up with the gas port. Torque the barrel nut to where the tube freely runs past it into the upper assembly.
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That's the hard part, actually... ensuring you have all the holes aligned and that the roll pin goes through all 4 of them. I'm finding thst the most difficult part of that process,,, without, of course damaging the roll pin. I will try it with a roll pin holder and a small bit of lube and we'll see.