Now, now s6quad, alot of the kp-3 were shipped with the piercing pin valves, even though they were made for CA. I just sold my Kp-3, that had stock internals(cept for some seals), and it had the pin.
I ran it with 12 grams. Dont be suprised if what ever you get, kp-3 or kp-2, doesnt get much more than 20-25 shos per 12g. To get it higher, it needs to be taken to PPS or such, as stated.