[-mike-]

I bought a 527 in 22h a couple months ago, its an older model with a 4 digit serial number. I took it out of its stock, and low and behold just forward of the magwell on the bottom of the action its marked 222. Did cz used to mark caliber on the action? Is it possible that i bought a rifle someone frankenstined? The bolt is certainly a 22 h, but who knows, right?