From Paul Whitney at Escort Japan, who works along with Shoei, TOP, and Sun Project making GBB engines for their guns. I trust his knowledge on the subject matter. Escort engines are known for being remarkably gas efficient.

Well... yea thats quite a reliable source Id assume. Unless they are afraid of the competition ;)

I bet that by the time these GBBs are out, they will be much more gas efficient. I mean, the recoil is much less than on the escort, I'm doubting those numbers still...

Time will tell...

I still want one.

Cheers,
Alex

Oh so do I. I've dreamt about internal-gas GBB rifles (and ESPECIALLY an AKS74U) since I got into this sport. However I'm skeptical that the TK will end up being any sort of commercial success simply because it'll be way too damn expensive. That looks like a VFC or Inokatsu kit he's using which is easily CAD$1,000 right off the bat. Add his custom gas internals for, say CAD$500 (an Escort M60 engine is $850), then a rough estimate of $200 per magazine? Just not a practical skirmish weapon at that point.

I think one issue with the efficiency stems from the fact that TK will have to be using direct unregulated gas pressure. External rigs benefit from a regulator that will allow you to tune your output and achieve a much more consistent and efficient flow.

Yep, it's in the mag.

***whoa, didn't read the second page before replying... Now it looks all out of place and off topic :p

great summary by ancorp and gryphon.

I'm just wondering if these would be mass production, or limited production.