We dislike the original dart loading method on the Nerf Retaliator so we develop our own! This pump kit is hot selling as many nerf fans feel embarrassing on the top sliding movement but feel smooth changing to pump kit. In nerf battle game radip firing does promote the performance, this kit is essential if you are equip with Nerf Retaliator to withstand the challenge in game.
This pump kit made of stonge but light weight Alminimun metal so you no need worry causing extra weight to your gear.

Please be reminded to select a vertical grip for this pump kit which is not included. Average modding skill require as you need to disassembly your blaster to install the metal screws and rods.
 
Instruction Manual:
Nerf Retaliator