I'm not sure about the later models , but as standard with no work done to them, they are considered one of the most unreliable guns around, everything magnum mike has said is not just a ham fisted guy it's a regular thing, pellets jamming , mags not cycling properly , bolts sticking and mags dropping out in the field never to be found again. There is a customiser called the logunator who could sort out 90% of these problems but it'll cost ... As Nathan said they are cheap compared to a daystate but there's also plenty out there at the same price with less reliability issues.