Fits maverick 88 20" barrel* - NcSTAR ShotGun Rails Bayonet Mount Remington 870

A very decent 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; might be room for two layers of tape. 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 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 the Picatinny rails, use just one or both. You can unscrew the sling stud and remove it if you do not need it. The mount 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. You can use only the sling stud/Picatinny rail part and leave off the end piece for the bayonet ring if you desire. Item is 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) and get stuck 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 screws tight which will also seal the threads from moisture. FYI: the left Picatinny rail has to be removed to reach the fastening screw for the mount but the kit includes the 2 hex wrenches that you will need. I gave it 4 stars out of 5 because it isn't perfect, however not every gun is identical due to manufacturing variances so it might fit perfectly on yours without modification. A bargain at $16.20!