http://grangeairsoft.com/tippmann-hpa-m4-carbine-pre-order/dp/1312
nearly half the price of a polar but still not exactly cheap when some paintball guns are
much much cheaper than other tippmann stuff:
http://www.store.justpaintball.co.uk/paintball-guns/tippmann/tippmann-bravo-one-tactical.html
dunno if anybody has got hold of a tippmann m4 from grange just yet - but blow (excuse the pun)
blow me it ain't an absolute bargain when compared to paintball stuff
OK - CO2 option and new area they venturing into but still gonna wait n see if price drops to say
£250 or there abouts.....
Not knocking it - it is great and can see some paintballers crossing over to airsoft but think I will still wait
or jam an airline & mac valve into to something (battery req) - let the old gears run without spring/piston
tap an airline into cylinder head - run pipe to mac/solenoid out of back of old gearbox
but tappet plate still used with gears to load bb's to hopup - little micro switch trigger solenoid
ROF can be tweaked up or down by voltage - no major drain coz m120 spring gone so just spins gears
plenty of small regulator valves can be fitted to adjust fps
and later advanced versions can have a small pic chip or controller circuit to adjust the solenoid "on" time
or burst of air volume firing out of cylinder head etc......
Well that is the basic concept in turning old crappy aeg into HPA and is probably quite do-able if you have time
or build a mental Vortex mofo from bits of plastic pipe etc.....
Can see HPA growing - but atm it is still expensive for what it is - but convert or a diy kit could mean we get hpa
and can still use all our favourite models n tweaks n barrels n stuff rather than be tide to polarstar/tippmann stuff