I owned a SV version for a while and it was exteremly consistant at about 275 fps, I also modded on a rail to the bottom of the battery case to carry a M203
and then later a flash light. All you need is a couple of small screws and nuts from a hardware store and a VSR-10 scope mount, just drill a couple of holes in it and through the battery case and presto you've got a nice little acessory mounting pad, also use a M16 carry handle mount and drill a hoe in the top of the handle and you can have a scope or RDS as well. The gun is un-upgradable as the piston is unique to the gun and cannot be removed from the spring so sorry man, your stuck with a stock gun, as well the motor cannot be changed without some serious mods to the gearbox and it is an old motor (EG 650/550) :rrr: But the gun performs very well both indoor and outdoor but as it cannot be upgraded there is a slight disadvantage when playing outdoors. My advice to you greyfox, it is not the best choice for a starter gun as it is difficult to fix and even harder to get accessories, get somthing alot more upgradable before going to somthing like a FAMAS