Wolverine Airsoft BOLT HPA Engine O-Ring Kit
The Wolverine Airsoft BOLT HPA Engine O-Ring Kit is the complete O-ring replacement set for the Wolverine BOLT HPA bolt-action sniper engine. The BOLT is Wolverine’s dedicated engine for bolt-action sniper platform conversions. The engine’s air path from the HPA inlet to the nozzle is sealed by multiple O-rings at the piston, cylinder head, and nozzle positions — these O-rings are subject to wear under the compression loads of bolt-action cycling and degrade over time, causing air leaks, velocity drops, and inconsistent performance shot-to-shot.
Replacing all O-rings in a single maintenance service pass using this kit restores the BOLT engine to correct sealing performance. For BOLT engine operators experiencing declining velocity or air leaks from their HPA sniper platform, this kit is the correct OEM O-ring set for the BOLT engine.
- Wolverine Airsoft BOLT HPA Engine O-Ring Kit
- Complete O-ring set for all BOLT engine sealing positions
- For BOLT (original generation) bolt-action sniper engine
- Restores air sealing and consistent velocity after O-ring wear
- Made by Wolverine Airsoft — leading HPA airsoft specialist



