Replacing a 1991 Mossberg 500 mag spring

[Bushido-sig]

I'm trying to replace the mag spring in a 1991-ish Mossberg 500. I have the AGI armorer's DVD but the problem is, the mag tube in the DVD is different from the one I'm trying to disassemble. The one in the video was a one piece tube where the one I have seems to have a "cap" on the front end of the tube.

Can somebody with experience disassembling this type of tube give me some advice?

Thanks.

[an actual gun]

By cap, do you mean the barrel nut? I can't think of anything that would stop you from simply unscrewing the mag tube from the base of the receiver.

A picture of your mag tube would help.

[Bushido-sig]

Yes. I do believe it is the barrel nut. Also, I found out the tube needs to be unscrewed from the receiver.

What does everybody use to unscrew the tube from the receiver?

Thanks.

[Steve G]

Yes. I do believe it is the barrel nut. Also, I found out the tube needs to be unscrewed from the receiver.

What does everybody use to unscrew the tube from the receiver?

Thanks.

My hands, they are wrenches

[Bushido-sig]

"My hands, they are wrenches" you are MANLY! You must be an iron worker. Shook a guy's hand that worked as an iron worker, he nearly crushed my hand.

[scott.cr]

Sounds like you have the closed-end mag tube. No big deal; it still unscrews from the receiver. You might need make or buy a barrel wrench to unscrew it. Some penetrant and heat at the joint will help.... but nothing beats a barrel wrench on the tube and the receiver clamped in a vise. (Being careful not to crush the receiver.)

Get an original Mossberg or Remington spring if you can. I bought a Wolff spring and the ends weren't closed, so I had to close them myself, which is a pain.