Systema Bore Up MK5/552 AEG Cylinder Set[M04C13 / SI03][00400 / ZA0340]
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Bore up kits are designed for guns upgraded with an M130 spring or higher. In order to take full advantage of the powerful spring bore up kits have larger cylinders and air nozzles, which allows more air to power the BB.
Package includes: bore up cylinder, bore up cylinder head with double O-rings, silent piston head with ball bearings, bore up nozzle.
- Manufacturer: Systema
- Color: Silver, Red, Black
- Material: Metal / Polycarbonate
- Package Includes: One (1) Cylinder Set
would fit fit an m4
would it fit my m4
2506 days ago
(I have this same question)
Depends on what M4 you have additionally what barrel length.
2505 days ago