[Oneofsix]

The Marbles sight you can get a great discount on with the C&R, if you hadn't priced it yet. Just put one on my Mav 88 and it took a lil doin', as Mr G. said, it's tough to time right. Ended up filing a little off the bottom of the sight and it was right on.

oh, package mine came in has 5x40 written on it.

 

[Oneofsix]

You are correct that Mossberg uses a 5-40. Brain fart.....

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I'm just glad you had originally posted about the Marbles sight/bead, the former house shotgun just had a fiber optic clip-on type front sight, since I had cut that particular barrel down to 18.5". It works, but the tritium sight is just better, especially for low light situations.