Here are some pics of my ESB DL-44
I used a Denix Mauser with woodgrips, a metal scope mount with resin scope, metal flashhider, and selfmade greeblies.
The old bluing was completely removed and renewed with Birchwood-Casey cold bluing.
I also drilled through the barrel and put a working laser diode inside. A microswitch for the trigger and a soundboard
make this blaster complete
Here is a short clip with some test shooting
http://youtu.be/Kqe25XcbXSw