Bore-Up Kit for M4-A1 / RIS / SR16 / M733
Set
Bore-Up allows you to achieve additional 10-20 fps. The advantage of such
Non-imposition of a set of other elements and Gearbox
battery.
To set to work effectively it is recommended to use springs or stronger S120.
Set contains _
- Cylinder of an enlarged diameter
Photos - caulked, ventilated and Ball-piston head of enlarged diameter
Photos - caulked nozzle set Bore Up
Photos - Aluminum and double sealed cylinder head of enlarged diameter