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This Blasters3D product is a top Rival rail for the Nerf Rival Mercury XIX-500 toy blaster. This top Rival rail allows you to mount standard rail accessories to your Mercury. It also serves to provide new aesthetics to the Mercury blaster for cosplay, a unique build, and just plain fun.
The Rival rail is specifically designed with the intention for you to install the Blasters3D SpeedLoader Carrier. But, of course, you may use it for other purposes as well.
Slight disassembly is required to install this top rail on your Mercury blaster. To install, unsrew the three top front screws on the Nerf Mercury, split the front end apart slightly, insert the top rail into the slot right behind the front sight.
Nerf equipment used for illustration of this top rail are not included. You can get the Nerf Rival Mercury XIX-500 from Amazon here: