I use U-Pol P38 filler. It sands pretty easily and doesn't tend to chip.
Try this. You can get it off ebay.
Try this. You can get it off ebay.
Seconded, or buy it (steel epoxy) from your local Wickes DIY store. 
It's what I used on my Thompson mag conversion; http://www.ww2airsoft.org.uk/php/phpBB2/viewtopic.php?f=13&t=7580, and many other projects.
A Proud Member Of 'Team Spleen!' who play mainly at Gunman Airsoft, Tuddenham, Suffolk.
i use quick steel a lot,its good gear but mix it well as it can leave a streaky finish if not. very strong stuff ,it can be tapped if needed and sets fast too.body filler can be a bit soft although gets a nice finish and if its unlikely to get damaged then is fine but not in an area of stress or wear.also consider milliput if you want to sculpt it for say a knurled finish and comes in various colours.
armoury
m1a1 Thompson,sten mk2,mp40,stg44,sterling,mk2 bren gun,lee Enfield no4 mk1,Mauser Kar98, Walther ppk,smith and Weston m10 and Mauser m712
Give me a big enough hammer and a place to stand and I could fix the world.
i'll kill a man in a fair fight or if i think he's going to start a fair fight or over a woman or.......
a problem shared is a problem halved ,but an advantage shared is no advantage at all
if a job's not worth doing then its certainly not worth doing well
Ditto to the Quick Steel stuff... it's what I used on my SMLE.
I agree with Jetta, if you want a really fine finish between filler/putty/rapid steel and other materials, something like car fine body filler or even "knifing stopper", sanded with fine wet and dry papaer is the way to go.
About 3 minutes, so mix only a little at a time.
setting time depends on temperature,hot-fast cold-slow
armoury
m1a1 Thompson,sten mk2,mp40,stg44,sterling,mk2 bren gun,lee Enfield no4 mk1,Mauser Kar98, Walther ppk,smith and Weston m10 and Mauser m712
Give me a big enough hammer and a place to stand and I could fix the world.
i'll kill a man in a fair fight or if i think he's going to start a fair fight or over a woman or.......
a problem shared is a problem halved ,but an advantage shared is no advantage at all
if a job's not worth doing then its certainly not worth doing well
You can get a repro stock for $120 see here http://www.ebay.com/itm/G43-K43-G-43-K- ... 33739b1b5a I've bought 3 different stocks from this guy and I can recommend him
In the description;
Shipping cost is 20$ for delivery in Europe !!!
Awesome.
Did you get it from that guy on ebay in the end?
Right folks, managed to get my mitts on a reproduction stock and have spent the best part of this afternoon using google sketchup to model a bolt carrier for the G43. I'm thinking on getting parts 3D printed and then cnc'd. May be the only way to do some of what I have planned.
This site is damn good for 3d printing of parts (cheapest you'll get) http://www.shapeways.com
Use Pa220 (white, strong, and flexible) and after a priming, sanding and painting you'll be away
Why not alumide? Looks a winner to me but I've never seen or really looked at 3D printing before! 
Why not alumide? Looks a winner to me but I've never seen or really looked at 3D printing before!
Its a little more brittle, and as such less resistant to shock damage. If you had theh money I'd say go to the other end of the spectrum and get it done in SLS stainless but you'll be dropping a considerable amount of money on that 
Another option would be getting in contact with a company who own a 5 axis metal mill, and have it milled from a solid billet, but again price.
Hope this helps
EDIT: To get your sketchup model milled/3d printed you'll have to have the file converted to a .STL file, I don't know if sketchup can do that natively but it's worth checking 
Have you got the name of said store?
Cheers 
This is one of his stocks mate.
Ooo, I'd be keen on a G43 or k98 stock. Been thinking about building an MG42 as well so may end up bulk buying from him... 
Try this. You can get it off ebay.
this is what i was going to recommend, it worked great filling in gaps on my g41
also most car spare shops sell it
"Take that you rotton helping of strawberry flan!"
Joseph Porta to "strawberrys and cream", in the sven hassel book ,ogpu prison