Reviews & Ratings for NCSTAR ShotGun Rails Bayonet Mount Mossberg 500 — 5 reviews — Page 1

A good combination bayonet mount/front sling swivel/tactical light-laser mount. I read the reviews and knew about a few fitment issues beforehand. I installed the largest piece first (on a Maverick 88 with 20" barrel) but it needed a shim to make it fit tight. I used one layer of 3M 3340 (thin aluminum tape) on the inside diameter of the piece and it fit snugly; use a second layer of tape if you need to. The end cap that supports the bayonet ring was too tight and would not install by hand. It needed to be hollowed out slightly to fit over the knurled take-down screw so I used a 1/2" Dremel sanding drum to slowly remove material from the inside diameter until it fit loosely but snugly, then used the mounting screw to lock it down. The mount is highly modular; you can remove both Picatinny rails, or remove just one. You can remove the sling swivel if you do not need it. However, the swivel allows you to use a regular length sling since some slings might be at their adjustment limit if you use the factory sling mount on the end of the mag tube/take-down screw. You can use just the sling swivel and Picatinny rails and leave off the part that holds the bayonet ring if you desire. Item is forged aluminum with a matte black coating, it is not made of steel but it is fairly hefty. It is possible the steel screws will react with the aluminum (galvanic corrosion) so If you want to take it off in 5 years, maybe use some anti-seize on the screws. Blue Loctite can be used to keep the scr...
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M9 bayonet doesn’t fit right on the mount. I have to modify and grind down metal on the mount to get the bayonet to fit snug. This is a common issue as I have seen you tube videos of people having to do the same thing and modify it. This kind of defeats the purpose of buying a product you have to grind down to make work properly. overall unsatisfying

Perfect for 590 for a bayonet and light on the rails.

Fantastic item UK 590 persuader does not come with the iconic mount .. great alternative as the side mounts are optional.