Finally found time to share some info on these R10's on sale (riding shotgun on a 13hr drive to WI). I've had my R10 MK2 .22 black wrap for a couple of weeks now - REALLY like it. It however did need some TLC when I got it. Now, mine might be the only one that was like this but I doubt it. It arrived in perfect visual condition. However, after firing off the fill it came with, it started to leak after refilling. I researched probable causes, watched the XTX Air repair videos and went to work on it. My gun seems to be from some pretty old stock by what I found. I cleaned old lube and green crud off of the fill valve spring and regulator body (this crud was not on the moving parts of the reg). I cleaned internals replaced o-rings and relubed. Some of the o-rings had lost elasticity and the reg piston o-ring actually cracked in half while removing it. Luckily the R10 is not difficult to work on and I had planned on "giving it attention" when I bought it. All things considered, this is a great deal. A little adjustment of the hammer spring and it is getting 50 shots @ 866 fps average, 14fps extreme spread with 15.89 JSB's. It is a very comfortable stock and points instinctively. And yes, everything you have read about BSA accuracy is true! If you are considering purchasing one of these, do it - but order a new seal kit also.
