shooting slugs through a gun with a screw in choke

[XTrooper]

I've got my eyes on a burris fast fire III. they make a shotgun mount for it, too. A little pricey; but after my first burris, I think they are worth the money.

I have Burris FastFire III optics on all three of my tactical shotguns (Benelli M4, Mossberg 930 SPX, Remington 870). They work great and have held up well to the recoil of LOTS of shooting.