this is in fact the very model of jg that i have.
the "recoil" mechanism isn't really, it has a mechanism to slide the charging handle to and fro but in terms of shaking the gun prepare to be dissappointed, it just doesn't have the mass.
it's not the strongest built system out there, the stock piston has a cutout which slams into a tooth in the back of the gearbox which to my mind is asking for a stripped piston. that said neither mine or one a mate of mine had (who did run it for a while stock) suffered broken pistons and neither were new when we got them.
the recoil mech can be deactivated, you need to split the box to get some parts out but it can be run as a regular aeg. so at least if/when the recoil mech dies you can strip it out and still have a functional gun.
the stock components are, ok, certainly the gears seemed decent enough (better than the crap that i found inside my lct box anyway) and the gearboxes run much smoother than by rights they should.
just like the cyma's expect the air seal to need a bit of work but once you've done that it shoots very well, certainly mine has always punched above its weight in that regard even with the white plastic hop that looks like it should be utter garbage.
bodywork is probably the weakest point, the wood aint bad but it's pot metal city everywhere else so careful not to be too heavy handed, it's a different assembly setup to the cyma's/lct's/e&l's with more pins going on (mainly the outer barrel is pinned to the reciever) so aftermarket hop parts might be tricky (never tried as the stock one was good enough for a backup gun)
i'd offer some pics but mine's had that many bodge fixes over the years it's not really gonna be all that representative.
tl:dr you do some air seal work she'll sling plastic good enough, the ebb is anaemic at best but at least if it breaks you still have a decent shooter. bodywork is bargain basement but then it's bargain basement price too.