Just when I thought I'd finished cutting stuff, turns out I missed some minor bits.
First up, there was a small tab at the front left of the barrel that supported that side.
A quick hand-drawn line with the Xacto as a guide, followed by a slice from the Ryobi.
Hit it with some 200 and 600 grit sand paper, and it's sorted.
Second, the hole at the of the top stabiliser is too small, and obscures the internal bar.
I used a sanding barrel on the Ryobi to slowly open it up to match the bar diameter.
It's a small touch, but to my mind it's the small details that add up to a believable prop.
Third, when removing the rear stabiliser bars I realised the two halves don't match up in design.
That left me with a weird shape to try and close up. Instead, I made the them match, cutting off the longer of the two sides.
Finally, I get to build something rather than cut it off! The original toy didn't have the magazine protrude at all.
In the film prop we can see it sticks out by quite a margin. A small box ought to do it.
Originally I was going to glue thin sheet plastic over the outside of the end and then onto the body,
however, there isn't much to glue onto so instead I've decided to build something that will go inside instead.
I measured the sides, then cut two long and two short sides from some kitchen cupboard samples I had lying around.
They're just thin wood pulp board, but quite rigid. Easy to cut and sand, which made it a quick job.
To cover the short sides, where there is no smooth surface, I'll apply a thin plastic sheet with grooves cut in to emulate the prop.
I noticed I'd left a rather uneven cutting line when I sliced the side of the magazine off the body,
so I used a sanding block to even them all up - much tidier!
Then I moved onto a bit of a trickier rebuild; the v-shaped notch cut into the foregrip.
I measured the plastic sheet up against the cut-outs to make a rough termplate and planned to only score the lines,
so that way the internal sides would remain stuck together.
Unfortunately the plastic is probably less than 1 millimeter thick and when bent after a light score it simply snaps clean off.
Instead I glued one side as a single piece with some Araldite, a two-part glue.
The second piece I lined up with the thin central piece and used some masking tape on the inside to keep it together.
I glued that in on the other side, and once they were both dry I lined them up for a test fit.
A little trimming should sort out the gap, and give me a decent foundation to perhaps bog, and sand smooth later.
Next up, I'm looking to source some bits and pieces of pipe for an extension to the front barrel.
The movie prop shows the vents closed up, but I'm planning on leaving them open so you can see inside.
Off to a plumbing supplies store, me thinks!
It's whole new challenge to be honest. I've not really sat down and looked at how to close some areas up, particularly those with curves. I may need to build in a small framework or lattice of plastic and then put a gob of builders bog on it, so it has something to hang on to. 
