Mack

Look for an FMA Maritime or TMC Airframe. Both will suit your needs.

As already mentioned, its a Jing Gong S-system, The box gives it away

Its not a TM box, its a G&G gearbox. You havnt even got it yet and you want to start ripping it to peices why?

Going by the picture they are TMC

Yes, Leave it alone. Maybe clean the barrel after a few games.

Get on to Landwarrior and get a refund. Those madbull barrels are for KSC Glocks, not WE/TM. http://forums.zeroin.co.uk/showthread.php?112208-Hop-bucking-compatability-with-madbull-6-03-tightbore-barrel http://www.airsoftrange.co.uk/black-python-603mm-tight-bore-barrel-for-ksc-g17g18-madbull-1346-p.asp http://sportsequipment.healthybe.uk/product/madbull-g17-g18-6-03-tightbore-barrel-airsoft-green-gas/b00j3umjxo/9df/ http://shop.ehobbyasia.com/madbull-6-03mm-black-python-tight-bore-barrel-for-ksc-g17-g18-gbb.html#.VS_2OpOVD5M

This might be your problem

You do now Short inside the gearbox, Some laugh watching me trying to get it out of my stock before I lost it too.

That looks rough as a badger!

Taiwangun as you already said. Everywere else will be more expensive.

You could get one prebuilt for less than that already. But if you did want to build your own id go with either a G&P or VFC CQBR with colt trades. http://www.proairsoftsupplies.co.uk/acatalog/M4-MK18-Mod-I-Black--with-553-Red-Green-Dot-Sight--AEG-G-P-GP_AEG038BK.html

You can yes, easily done. Most people would recommend Deans connectors but there are others.

No. A lipo and nimh are two different types of battery. You can have whatever connector you want on any battery.

an AW50 with an eotech, love it

Looks more Dark Earth or khaki in these photos

CQB M4 in any flavour. Length is only 680mm with stock retracted. Infinite amount of upgrade parts and spares available. Just to give you an idea on sizing M4 CQBR/Mk18 stock retracted: 680mm Mp5A2, MP5A4 : 680mm MP5SD2, MP5SD5 : 790mm MP5SD3, MP5SD6: 670mm MP7 stock extended: 640mm p90: 500mm

Was the kids mate an umpa loompa or did they just have a really dodgy spray tan?

Guy had one of those at our local yesterday. They are noisey little things!

Hes gifted it. Theres nothing paypal will do now. Although a credit card company may reverse it.

The reason they let it go was because there was no mention of a RIF. As soon as RIF or Airsoft gun is mentioned they wont touch it. Happened to me a while back. Other cases http://forums.zeroin.co.uk/showthread.php?237456-PayPal-have-now-banned-any-amp-all-airsoft-related-payment!&highlight=paypal http://forums.zeroin.co.uk/showthread.php?216508-Paypal-warning-must-read&highlight=paypal

Thats exactly it, I put an m90 in a G&P Mk18 and got 360fps, cut a couple of coils and still only 340fps. There is no magic formula even though springs are supposed to be rated by the number eg: m100 = 100m/s m120 = 120m/s