Originally Posted by lt_poncho
JAC's are pretty rare - converting them to gas blowback is sort of pointless - the barrel recyprocates anyway, so technically it is a 'blowback' already. Not to mention hacking a perfect gun.
Thank you for sharing me your knowledge.
I don't know the different between SunProject GBB M16 Escort System and JAC's M16 mechanism :!: I've never tried shooting those GBB rifles before.
My intention is not to convert JAC mechanism to GBB as per my misunderstanding. The point is I like the way GBB rifles replicate the recoil action and it has only mechanical parts that I can make them in our company machine shop. I would rather choose the Escort System for my GBB C7A2 project.