Hey Bond it's a sub8, .40 cal the earlier model before the sub 2000, and it is a pretty cool toy, when it cycles it is kind of strange hard to describe- it has a funny sound, kind of quiet I guess the only.40 I ever shot out of a long bbl. All in all it is a sound weapon but I would go for the newer version they have a locking action and a few other upgrades. As for jamming-DON'T let em get dirty inside clean it every time you shoot! Clean-no jam Not clean-JAM. Went to wades range in Bellevue and pulled that out of my pack and really got some looks. <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />