I've had a early air wolf and the mk3 , The mk3 was the most consistent gun I've ever shot, 9 out of 10 pellets were identical reading on my skan chronograph, I bought the both above as non working , Also the air wolf was leaking and had accuracy problems, Phoned around about 6 gun shops, All said same thing, Back to daystate , Even replacing the batteries on my mk3 none of the gun shops could help except from sending back to daystate, I would say though that speaking to some woman then some chap at daystate plus having a go myself I managed to sort both guns out with very little cost to myself, The mk3 is one of the guns I now regret selling, Anyway I have a air ranger which does everything I need and cant fault it, Apart from recent leak which I replaced two seals on the fill port that's the only trouble I've had in the 8 years I've owned it,