mine hasn't had any problems! I sometimes wonder if one person having a problem, becomes an internet 'problem' that is not a 'real' problem at all. I'm sure all big manufactures have the occasional problem - i guess how they handle it is really the point. There's 2 others in the club i'm in and they are fine as well. I talked to Liam at airfective before buying mine and he put my mind at rest pretty quickly, lets face it - he should know. Talking to him, it's normally down to people twiddling with the power settings (sometimes too much adjustability is not a good thing?). Got to say it's my favourite rifle in the cupboard at the moment, from benchrest to hunting it does it all for me. If it has any problems - i can live with them!