Hibernator

Exactly that. Got mine from Bullseye Country Sport via Amazon for about a tenner.
 
Actually - they're even cheaper from Ant Supplies http://ant-supplies.co.uk/Pages/HandguardRails.aspx

that extractor bits is a really cool idea, never seen them before, I'll probably order a set... or two, fathers next bday sorted!

Something like this should do:
 
http://www.maplin.co.uk/p/rolson-6-part-damaged-screw-and-bolt-remover-n18cx
 
You use them in an electric screw driver or a manual one and unscrew as normal. The tip of the extractor will bite into the worn screw and it should start coming out.

Update for anyone thats interested: Ordered one of those extractor bolt thingies of ebay for £2 for a set of 5 and it worked a treat Thanks Hibernator for reccomending them!

Thanks Hibernator, have found one in HK for $20 so will pick one up and let my friend know I'll have his rail system.

Yeah - the little collar is part of the barrel nut and delta ring assembly. It is all that holds the barrel on. If you get that G&P delta ring assembly, it will fit fine. But you will have to saw the "wings" off the barrel for the nut to screw on passed your existing barrel. Once you've done that you will need to change the hand guards.
 
A bit late, but yes - 14mm ccw (counter clockwise) negative thread.

Krylon is very good, Plastikote can end up looking satin rather than flat matt if you put too much on. Another good alternative is Humbrol acrylic sprays available from good hobby shops, they do a huge range and cost about a fiver, though its a smaller can.
Whatever paint you use it will wear and scratch over time though.

Both of the above are wrong. It is illegal to sell a gun not buy one. If your friend knows you which i assume he does as hes your friend and knows you will be playing airsoft then that is good enough defence in terms of the law. Its a thin line but buying and selling between friends who play isnt illegal as the selling party can prove they know them and that they play which is all th defense you need. As long as your mate can prove you play then its legal.

Something like this should do:
 
http://www.maplin.co.uk/p/rolson-6-part-damaged-screw-and-bolt-remover-n18cx
 
You use them in an electric screw driver or a manual one and unscrew as normal. The tip of the extractor will bite into the worn screw and it should start coming out.

Agreed. I've never paid tax on any accessories bought from HK. I'm not saying that you won't be taxed, but it's highly unlikely for small parcels.
 
If you buy from the US however, nearly everything seems to get taxed!

Agreed. I've never paid tax on any accessories bought from HK. I'm not saying that you won't be taxed, but it's highly unlikely for small parcels.
 
If you buy from the US however, nearly everything seems to get taxed!

With a package that size you very rarely get taxed. I have over 30 orders from them and have never paid it once.

Yeah, complete and utter tosh, anything less than 51% solid bright colour as laid down in the VCRA is a RIF, patterns are a no-no and subdued colours don't meet the requirements.
 
That said, there's no law against you painting your gun as I assume you can prove you're a legit airsofter. The 18 year old rule applies only to SALE of RIFs, not manufacture.

Just remember it's a BBC3 sitcom! It won't have much of a budget and BBC3 is usually used for showcasing new talent/writers or stuff that will only appeal to niche audiences. Don't expect it to be a gritty/realistic dramatization of military life ;-) I'm sure the average audience member won't even have heard of MTP, let alone spot the difference between it and multicam!

Just remember it's a BBC3 sitcom! It won't have much of a budget and BBC3 is usually used for showcasing new talent/writers or stuff that will only appeal to niche audiences. Don't expect it to be a gritty/realistic dramatization of military life ;-) I'm sure the average audience member won't even have heard of MTP, let alone spot the difference between it and multicam!

Just remember it's a BBC3 sitcom! It won't have much of a budget and BBC3 is usually used for showcasing new talent/writers or stuff that will only appeal to niche audiences. Don't expect it to be a gritty/realistic dramatization of military life ;-) I'm sure the average audience member won't even have heard of MTP, let alone spot the difference between it and multicam!

Just remember it's a BBC3 sitcom! It won't have much of a budget and BBC3 is usually used for showcasing new talent/writers or stuff that will only appeal to niche audiences. Don't expect it to be a gritty/realistic dramatization of military life ;-) I'm sure the average audience member won't even have heard of MTP, let alone spot the difference between it and multicam!

http://www.proairsoftsupplies.co.uk/acatalog/gen_2_tr_16_carbine.html
http://www.proairsoftsupplies.co.uk/acatalog/gen_2_tr16_r4_carbine.html
http://www.proairsoftsupplies.co.uk/acatalog/gen_2_tr_16_a3_carbine.html
http://www.proairsoftsupplies.co.uk/acatalog/gen_2_tr_16_a3_carbine_light.html
You didn't notice the plethora of other G&G Top Tech M4s, right?