I posted this in the Chinese Forum, was told to post it here:

A buddy of mine has a NHM91 with a wrecked muzzle. My question is: what are the steps to replace the barrel? we've already pressed out the barrel pin, but I wanted to ask here before we proceeded further.

We have access to presses, a lathe, etc. what kind of jig do we need to press the barrel out without damaging the reciever?

Also, does anyone know if a reg chinese ak barrel ( like the ones kengs sells ) will press in, or is the size different?

Or should I tell him to send the gun to a AK smith?

Thanks

Well the muzzle damage is a long story, lets just say the end of the barrel is missing the front sight, ( not caused by a misfire, or any other shooting accident ) but the rest of the gun is in like new condition. My friend thinks replacing the barrel is preferable to cutting the barrel shorter, recrowning, and adding a new front sight.

The NHM91 has a 20" barrel, I know the kengs is a 16", I was wondering if the barrel specs were the same at the base of the barrel because the NHM91 has a heavy almost RPK type barrel all the way to the muzzle. The NHM91 reciever also seems more heavier duty and slightly longer than the standard Chinese AK recievers I have seen.

Thanks for the help Campy, yes I have access to a hydraulic press. I'll have to look into making a rig like you describe.