NOTE: Airsoft Megastore recommends that all internal upgrades and or repairs be handled by a qualified airsoft technician. Airsoft Megastore is NOT responsible for improperly installed replacement or upgrade airsoft parts. DO NOT disassemble your airsoft gun within airsoft Megastore's warranty period, as this will VOID your warranty.
- Aluminum construction
- Double O-Ring design
- Rubberized high flow back end
- Maximizes compression when paired with bore up cylinder and bore up piston head
- Compatible with most M4 / M16 AEGs
Package includes: Bore up cylinder head
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