Indeed - these guns are like mini hammer drill gearboxes....
piston smashing into cylinder head, gears spinning faster than a car's engine flat out on M1 motorway
(just did some bevel gear rpm maths btw)
So it is no massive shock when they sometimes crap out on you/me/us
If possible try & see about buying new from a reputable retailer
that way should it crap out too soon on ya you got some warranty
Often when people go on about about various new upgrades fitted:
in my mind fitting "some" new parts goes hand in hand with general wear & tear
and if the "stock" part was showing some wear then most would replace that part with a slightly better part
eg: stock nozzle + stock cylinder head + worn seal/o-ring on piston head
replace those after 6 months when gun loses some of its initial ooooomph
and gun will perform well again (maybe spring & AOE - don't worry what this means yet)
But if I replace them worn stock parts with some slightly better ones but I don't expect to demand another £50+ than new gun
it is just part of the course - if they were still ok-ish I would of probably left it as it was
Like putting in a re-con engine in a car - ain't a brand new motor
just it hasn't got a borked engine anymore - part of the joys of motoring/airsoft
Some upgrades are different - stuff like cosmetics etc.....
But annoys me when people expect internal mechanical service/upgrades to be worth so much more
(yes some stuff like hi-speed gears/motors are worth a few bob on top of general s/hand value)
but new super duper piston, top spec cylinder, tight as frogs ar$e double o-ring nozzle ????
chances are the previous stock stuff was getting worn and performing $hit..
So in effect they had to be replaced - yes why not with better stuff
BUT don't friggin' try ya luck trying to add on the full price of them parts ffs
at best if you replaced a crappy worn stock nozzle with say a £10 one
eg: say 3 bits @ £10 each = £ 30
In my mind then all I might add on is say 3 x £5-ish - the extra price over a stock one
fitting - oh leave it out, if you hadn't have used it so much or broke it it would still be ok
(was running alright when I left it as saying goes)
So I can't see how people can try to charge full price parts plus another £20-£30 fitting = £50 to £60 "upgrades"
when in my mind it is just wear & tear plus a slight improvement
But STILL a second hand gun
Oh well I might as well as keep it - they might say....
Fine I think, if it is a good gun then I would probably consider keeping it
(I am mega paranoid but often wonder if gun/car etc.. is so damn bloddy good why are they selling it then ?)
Whoooooaaa mega carried away there - ignore most of the above I wrote just me getting on my high horse
just confirm with the guy if there is any warranty of a sort - say Argos 14 day or something
or look to buy new - especially if there is a good shop local to you - not JBBG btw
soz for mega waffle chaps