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Print the lower
M5 Buffer tube screw 1x #23 HSS Drill Bit Grip screw pilot holes 1x Compression Spring Pusher piece — keeps engine seated forward 2x Bullet Valve Lead
28g This system was primarily designed to deliver maximum power so air efficiency was not a critical part of its development
Can be used to used to convert G&P R3 to use PolarStar Stock Rails
F1 or JACK systems
JACK / F2 BV309A Bullet Valve Beanie Print the lowerThe BV309A Bullet Valve is the solenoid used in all current production F2 and JACK HPA systems and it is backwards compatible with all F2 and JACK systems previously made. Power lead is included with the valve and also available separately. (Power Lead part # 10000479)
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