Being only a student, I had relatively limited access to the tools available in mass industry, so these instructions should serve as an inspiration for those with only the average set of household tools, the most expensive of which being a 30,000 rpm cutting tool (Available for around £30)
The tools and materials required are as follows:
Block of modelling foam (70cm x 26cm x 5cm)
High speed cutting tool (As above)
Hand drill with various drill bits
Clamp (I had a pivoting one)
Thin, strong wire (I used an old guitar string - Thinnest type)
Variable ower supply (I have read a 20v, 3A transformer will work, though I do not advise this unless you are thoroughly familiar with electonics)
Small coping saw (Optional but very useful to save time)
Foam sanding block (Like a soap bar sized cuboid with sandpaper wrapped around - Alternatively just use sandpaper)
About 10cm x 5cm of clear acrylic
Blue 9-12v LED
Acrylic paints and brush (Black, White, Yellow, Silver)
Oh yes, and about 40 hours of free time, maybe less if this guide helps!
Let us begin.......
Step 1: Preperation
Also there is a high res render of the rifle for later reference which you may want to print off too.
Cut out the full sized profile of the side template and stick it to your foam block. The barell will overhang, so cut off that bit at a suitable point (You should now have the rifle minus the barell stuck to your foam)
On to the next step.......