hello dumdum

the mk3 is as good as anything that you can buy today, everything was machined from billet stock, in fact, i was told that the reason the mk3 was discontinued was because they were too expensive to make!!.

on my .177 mk3, the seal is so good that, if you cock the gun then open the tap and then pull the trigger whilst holding the cocking lever, it holds the pressure within the cylinder, there arten't any other underlever rifles that i know of that will hold the piston back in this way, certainly, my mk5 airsporter won't, i believe this to be due to the fact that the loading tap is tapered in the same way that a gas tap is, it was lapped in for a gas-tight seal- quality or what!!!

john
accuracy too is excellent as long as the rifle isn't dieselling