My great uncle left me this when he passed 14 years ago along with quite a few other rifles as well and somehow I managed to lose this I suppose in one of my many moves while in the Corps. It's a Mossberg model 46m(b) circa 1947. Gun still looks great and I used to shoot the hell out of it and I'd like to again but I've lost the magazine tube. I have been able to find one for another gun he gave me back in the late 80's but I just can't seem to locate this one. Any help would be appreciated on this. Thanks guys.

It's one of these for reference.
old mossberg catalog

Do you need the inner tube, the outer tube or both? Numrich list both parts but the inner tube is out of stock. I would check back with them regularly.
Inner Tube
Outer Tube

http://www.gun-parts.com/mossberg/  $45.00, but they have them

You guys are both awesome, it was the inner tube. Ordering now. Thanks for searching, my fu is dead tonight and I couldn't find squat.