Marlin 336 questions

The muzzle end of the magazine tube is secured with what Marlin calls a magazine tube stud which is dovetailed into the barrel. If the dovetailed fitting is loose in the dovetail, the tube will feel loose. You may want to consider peening the two dovetail tabs just a bit to more tightly clamp the fitting. It should be pretty simple.

 

It's a brand new gun, bring it back, show the clerk the problem and get another one. This isn't normal and needs to be replaced or corrected.

 

+1...they should send it back or fix it themselves. Ya never know if it could be dangerous to the person shooting it. Take it back immediately

@TooStrongTerry

 

Welcome to FTF.
As the guys said bring it back. They should Exchange it for you. Aside from the little issue you have yourself a great gun Congrats.

 

Ok is the feed tube loose at the band, is the screw missing,or is it loose going into the receiver?
Can you take a pic of the sights etc?

 

It looks like the front sight is crooked. All the problems may be related.
Have you tried tightening the screw? Is that where the tube rattles?

 

Give me a side view of the gun and a close up of the sights and screws. The tube shouldn't move.

 

Have you shot it? Taken it apart?

 

If returning it isn't an option I would say go shoot it. You don't want to go messing with the sights if they are gonna work as is. The loose tube may cause some feed issues but you won't know till you try. After you shoot it. If you need to you can bang the rear sight over. I can walk you through taking it apart and we can get a better idea of exactly why the tube is loose and how to fix it.

 

Slide the band back bout 1" then VERY gently using a hard plastic spatula pry the tub out from the barrel a tiny bit. If that doesn't work I'd say take it to a good smith. As to your sights-a Smith will probably have to fix them for you.

 

I agree you need to shoot it first though just to see how bad your sights are off....maken sure you have a VERY big space to shoot where no one is around. Like a field at the bottom of a holler.

 

It should all be pressure fit against each part. The screw through the band pushes out and the screw through the end pulls in.
I wondering is the tube moving or just the band?

 

Ya the slight prying I described....or you can loosen it up a lot then shim it w moleskin