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There isn’t a rib on the 88 Security barrel, and so the stock bead disappeared when looking down the receiver to shoot slugs. Take your time with the installation. I used some 400/600 grit sandpaper and kept testing the fit. Brass is soft so be careful not to overdo it. Once I got it just right I cleaned the threads with acetone and applied some high strength (orange) removable thread locker.
Brilliant idea, excellent craftsmanship… THIS is why a business deserves to make money!
Works great with heat shield.
wrong thread pitch, wrong post diameter. Does not fit my Mossberg SG.
Sorry the bead didn't fit your shotgun, what model is it? If it has a standard 5-40 threaded barrel it should fit. Either way we have 100% satisfaction guarantee you can return it for a refund.
Like most older mossberg owners I was plagued with high right POI especially with slugs. (And when I say high right I mean at 50 meters I was aiming at the floor to hit the steel!) This is due to recevier being so much higher than the bead that the shooter tilts the barrel up and right to see the bead. Between this and the rear safety sight switch its completely fixed my POI and I am very impressed.
Easy to fit and doesn't mess with ascetic of the firearm.
Please note you will have to do a touch of filing to the threads to get them flush with the inside of the barrel but as its brass this takes no time at all with a file.
I also want to point out defender tactical were extremely helpful, professional and easy to deal with!!