Careless

ah kk  , my only experiance with hpa is the drop in kits and wolverine's mtw,  i know people have converted gbbrs to hpa , didnt know there was another system , yea your right about automatic fire with gbbrs , allways just use semi auto and aim for 1st hit kill if not 2nd anyway , not a fan of full auto firing so that aspect has never bothered me but for some it will be a huge draw back ..

ah green gas is fine in the right gun , my ghk's are decent and i recently built this  this kc02 , modified it so its actually bolt action! {to chamber the next round only , still gas powerd}  silent as hell because of that ! and shoots lazer beams! so green gas can be decent too , its just you need to get involved when things leak /go wrong rather then expect it to work flawlessy from the moment its out the box through to 2030 ,  the only downside i can think of with HPA is that it is pretty boaring and bland to shoot , theres nothing to it , no feed back at all , its like pressing a button rather then a trigger , but for airsoft its ideal! and my main reason is stealth ! sooo quiet!!

honestly if you are a serious airsoft player then you would be silly not to, my regret is not doing it sooner and buying some guns when i should of been buying the hpa stuff!! which = money wasted as there not getting used anymore , i know the price tagg isnt nice but think of it as an investment as it will last you a long time and you wont need to "upgrade" or play with it like an aeg ,  ,  the only thing you need once you got the setup is a nice aeg body {also a really nice barrel and good hop setup} for it which can be changed over to something else when you get board of it , im into H&K's so i like g3 varients and mp5's , both of which are v2 gearbox which are both compatable with my unit along with M4'S {fk m4's!!} , so changing it up wont be an issue as getting hold of bone yard rifs  for cheap is pretty easy also you can make up a different front end kit i.e DMR or CQB and can be swapped over in under 30sec's !!! by pulling the take down pins out and swapping over  front ends and fps adjusted to suit very quickly!! ,  the pros outways the cons and yea you still need to use a battery ,although its very small and lasts a very long time , there is a totally mechanical version {semi only} which doesnt use batterys made a company ??  , i know that wolverine are making one now , called the reaper M  , but you would have to wait ...

do it , i went with a wolverine reaper engine + wraith c02 stock , takes 12g co2 cartridges , its awesome!!!   and quieter then a mk23

this place has to be up there with the best in the uk , they also hold an event every august  , 3 teams with over 2500 players in total , http://groundzeroairsoft.com/      https://www.airsoftfestival.com/

brought a ghk m4 a few months back , lovely gun very well built, downsides> had a random issue with it very it wouldnt fire , it turned out a bb had cracked in half in the chamber and managed to get its way inside the trigger mech, so dont use bio bb's with these as the chambers rather harsh on bbs , also had the gas mag seals leak on all 3 of my new mags! but seal kits and tooling and spare parts are all available, i guess it all depends on how new the mags are , they could of b...