Newbie Question on DA Grizzly mag

[Mechanic959]

I'm just wondering if the bolt assembly on a Grizzly mag differs from a
tube mag fed griz or 870?

Thanks!

 

[Mechanic959]

Anybody? ...

I have been told there is a slight difference. But it might be possible to mod a 870 bolt to fit the da grizzly mag. Anyone have any experience with this?

Thanks!

 

[Kenyon]

it is definitely different