difference barrel/mag tube

[moss535at]

hi, im buying a 500A 12ga and wanted to ask some questions?
can I buy a 20ga barrel and mag tube to fit my 500A/
will the bolt be the same?
I know what the size difference 12ga to 20ga shells.
this is short because I have some 20ga shells to shoot...
or I might buy a single barrel 20ga shotgun..

 

[John A.]

I think the bolt on the 12 and 20 are different too.

By the time that you bought all the parts to convert it, you probably could buy a good single shot 20. Mossberg 500 barrels alone usually start around $80 used on ebay and go up from there.

 

[Bobster]

I'm pretty sure 12ga and 20ga are different animals, 20ga having narrower everything: bolt, receiver, mag tube, barrel, etc. There might be some common parts but I wouldn't know. The pistol grip or stock from a 12ga may "fit" but stands proud on the 20ga if I'm not mistaken. John has the right idea and this is the perfect excuse to get another gun! You wouldn't be the only one to buy a gun because you had the ammo first... (as I raise my hand )

PS: I had a 70s vintage Remmy Wingmaster 20ga that had the ability to be converted to 12ga with tube, bolt and barrel although I never tried (see John's answer again).

 

[GT_80]

12 and 20 gauge are different. you cannot interchange from 12 to 20 parts.