The PDI hop-up unit repair kit includes all the replacement O-rings, set screws, adjustment tools, and other small parts associated with the PDI sniper rifle hop-up units. This repair kit will work for the APS2, M24, and Type 96 hop units.
PDI produces the most precise, high performance airsoft sniper rifle components on the market. However, even the most high-end hop-up unit won't work if you're missing parts. The PDI Hop Up Repair Kit includes all of the accessory parts for an L96, APS2, M24, or SR-2 hop-up unit.
-Hop-Up nub (tube)
-Small screw 2 pcs
-Small screw 3 pcs