By "BB gun" do you mean 0.177"/4.5mm calibre that can do some damage?

Yes

I was thinking of some sort of internal pulleys and a cable, maybe some power assist the airsoft is already to tough, i want to achieve the feel of the real thing

i could throw away all the airsoft internals, all i really ...

what im in the market for is a sniper bb gun that cocks via bolt action, however there doesn't seem to be any...
i was curious if i could replace the spring sytem inside my airsoft awp with a nitro piston like that in the break barrel single shot bb guns, and change the feeder and barrel but i just ...