This rail clamps to your Benjamin Akela air tube to securely add three 3 inch picatinny style rails. One on the bottom and one on each side. This will allow you to mount a bipod, laser, flashlight, camera, bayonet, grenade launcher, and probably still have room to mount a cup holder or two! The slots in the rails are 20mm apart. If you have an accessory that uses two slots and the distance between the two is not a multiple of 20 you will need to file a slot to mount that accessory.
It is 3d printed in ABS plastic in the US by a veteran-owned business. We use two black steel socket head cap screws and nuts to clamp the whole getup to the Akela air tube (please note that we no longer use stainless screws as they are not ideal for this application). Some folks may need to do some light sanding to get it to slip over their Akela air tube. Most will not. If you’re not comfortable with that possibility, I wont judge you, but please do not order.