Will this Magazine Tube fit my Mossberg 500

[CheckMate]

I have a Mossberg 500 that I'm upgrading for the first time. It has an 18.5 inch cylinder bore; 6+1. I'm trying to upgrade on the cheap and get 1 more shell in . From the looks of it, I think I can swap in a 7+1 easily. Here is what I'm trying to buy currently:

https://www.gunpartscorp.com/Products/721730A.htm

This is my Mossberg right now:

Full pic of Mossberg

 

[GunnyGene]

I could be wrong, but from what I understand you cannot just swap out the mag tube. You also have to get a matching 20" barrel.

 

[old mossy]

hello CheckMate.welcome from NY.
Gunny is correct,you can not use the tube alone. if you want a larger capacity you need barrel and tube.

 

[GunnyGene]

hello CheckMate.welcome from NY.
Gunny is correct,you can not use the tube alone. if you want a larger capacity you need barrel and tube.

This raises a question for me that maybe you can answer. My 590 mariner has a 20" barrel, but will hold 8+1. Why the difference between the 590 and 500?

 

[oli700]

the construction of the mag tube allows for the extra round.....the tube on the 500 has a thick end on the muzzle side to accept the bolt that holds the barrel......the 590 has a cap, more room

 

[GunnyGene]

Thanks Oli. Makes sense. I suppose that is also why the 500 requires a full mag tube+barrel swap to increase capacity. Couldn't use a extension either then, right?

 

[LAZY EYED SNIPER]

Correct.

There are no tube extensions for the 500. However, a 500 receiver will accept 590/835 style tubes and barrels which will allow the extra capacity and the use of tube extensions...

 

[old mossy]

Gunny, here's couple pics to show the different end caps like Oli mentioned,,,,,,

 

[GunnyGene]

Right. The cap on my mariner doesn't have the sling lug, but rather it's on the tube ring (nomenclature?). Engineers are weird

 

[old mossy]

,,,yup ,,,same with my 500 persuader 20".