i looked through all my guns and didn't come up with anything that would pass for a sterling. i did mess around with a few things and took pics just in case you were interested.
this is a piece i mocked up awhile back for a calico rifle aka spaceballs blaster. just cut the two sw pieces and pinned together so far.

that got me looking at this longer sw weapon. mine are for another project so i didn't cut one up, but if you cut one using the sw sterlings length the middle section might pass as a sterling with no stock.

you would also need to trim the laser looking bit under the hg.then you can build a stock out of wire or something.
i took a lego sw rifle and tried it real quick.
eta b4 pic

here i cut the stock and scope off. added a little steel cap(not necessary), and drilled a hole for the stock. i bent it into shape.
it is a functioning folding stock. i started with it folding under.



but then switched to top folding


you could also make a side folding wire stock by drilling a hole from top to bottom instead of left to right.
also here is a lego blaster pistol and a scrap stock from my gun parts bag.

_________________
The more you run over a dead cat,
the flatter it gets.
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