This K'nex gun is modeled after the Heckler & Koch SMG II, which was designed in 1984. They are custom-made and only about 60 of them are in existence today.
working slide (makes it much easier to cock and doubles rate of fire)
removeable magazine (thanks to Oblivitus)
trigger guard needs some work (but I fixed it, look at the 4th picture)
no sights or scope
only shoots about 20 feet
I will try to fix these problems if I post it.
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