Well I have a Tanaka m700 AICS. Yes I know its not a KJW but they have the same problem; consistency on propane or green gas, the consistency is terrible. If I was you, im doing this right now also, I'd spend a good amount of time looking around at how to make a co2 or HPA rig, this is the greatest fix for gas operated airsoft snipers. Also invest in a good bucking and a 6.03(not 6.01) TBB. This is just my $.02.
NOTE! I sent an email to asgi about that inner barrel you mentioned! It does not have the gruve for the VSR-10 buckings!
Go with laylax, Edgi, Prometheus, or PDI barrels that are designated TanakaM700, KJW or Vsr-10 compatible. AND DONT GET the madbull 650mm inner barrel.
NOTE! I sent an email to asgi about that inner barrel you mentioned! It does not have the gruve for the VSR-10 buckings!
Go with laylax, Edgi, Prometheus, or PDI barrels that are designated TanakaM700, KJW or Vsr-10 compatible. AND DONT GET the madbull 650mm inner barrel.