[Cheeseybacon]

Glad to know I can drift the pins out. I have no desire to go back to the A2 front sight, so I am OK with it being ruined in the process of being removed.

I'm studying my front sight some more and I'm beginning to suspect to that even after drifting out the pins, I still won't be able to get this FSB off without cutting it. First of all, there is a slight lip on my barrel, right in front of the FSB. It's not too tall, but it definitely looks significantly larger than the diameter of my barrel where the FSB is sitting. Will the diameter of the FSB expand a bit after I remove the pins? The thing looks totally solid and I can't imagine it moving much even after the pins are removed.

Also, assuming I could pull the FSB past this lip after removing the pins, I've now got to deal with the flash suppressor. I have a 16" carbine and I'm not certain, but I think the flash suppressor might be welded on to insure the minimum 16 inches of barrel length. I guess I need to measure it. As far as the law is concerned, where does the barrel begin on an AR15? Does it begin at the rifling or the chamber? Or does it begin as far back as the bolt lugs?


Lastly, if I my barrel is 16" on it's own without the flash suppressor and there is a good chance that I cant just unscrew the suppressor, can I do with with the barrel still attached to the upper receiver, or am I asking for trouble?