Pay in 4 interest-free payments of $43.38 Learn more
Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
Estimated 10-15% efficiency improvement
This part will only fit the Type 96 series and will not work on Marui L96 AWS guns
2016 - prototype test - We were able to install a BOLT into a VSR and achieve 650 FPS with
The HK VP9 Spring Pistol
your choice
Polarstar JACK - HPA Standard FCU Conversion Kit Version:V3 (AK G3) Estimated 10-15% efficiency improvementThe Polarstar JACK HPA Standard FCU Conversion Kit. This is the full sized FCU version for easy programming. Contains everything you need internally. Works drop in with most M4 AK platforms. G&G, Elite Force, JG, and most are pretty easy to install. Watch some Youtube videos on how to put it in yourself. With the Polarstar JACK engine, all you need to complete your HPA setup is: HPA Air Tank (non SLP tan regulator is okay, Ninja, Valken, FS is good)
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