Dominion arms Grizzly and 870 tube extensions?

[Forestsight]

I was hoping someone here had some experience with the Dominion grizzly 12.5. Will 870 tube extensions work on the Grizzly? I was thinking of a +2 or +3.
Any help would be great... Loud makers.

Matt

 

[Turkinator]

Yes they will fit on there but it will stick out inches beyond the barrel if you're keeping the 12.5" on.

 

[Forestsight]

It doesn't seem to affect IPSC shotgunners. I'd just be shooting slug ammo. Thanks for the info.