by Rentax » Tue Sep 29, 2015 11:53 pm
Sorry to hijack your thread...
I don't know much about HPA rigs, but after a quick Google search here's what I do know.
The arx 160 uses a regular version 2 gearbox. That's the standard gearbox for most M4 platform guns.
I also know that polarstars new jack system, drops into an existing v2 gearbox, so it should work.
We have reached the extent of my knowledge of HPA systems.
Hope it helps.
We do what we want