So the trigger on my KP45 Tactical (a gas airsoft pistol modeled after the USP Tactical) broke a few months ago, and I had to order a new trigger for it online. It took me a couple months to actually do that, but I finally did last week and I got the parts I needed yesterday. I made a thread on the tech forums asking how to reassemble the internal mechanism a few days previous, so I'd have something to work with when I got the part, but no one posted anything. So I ended up using
this diagram as my only reference point. The parts you see in the center are most of the internal firing mechanism parts. Going off of that, I was actually able to reassemble the entire gun in a matter of a few hours. And I feel like a friggin genius for figuring it out.
Here are some pics from the operation, pardon the cellphone pic quality:
This is what my gun has looked like for 3 or 4 months now, the entire internal firing mechanism had to be taken apart just to remove the broken trigger. I kept all the parts in an Altoids tin.
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Getting started. Also no that's not blood on my worktable, it's spilled drink. >_>'
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Matching up pieces on the diagram, making sure everything was accounted for and what.
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Getting the trigger back on was a tricky part. Had to find a way to keep the spring still while still managing to pull it forward, put the trigger on, then stick the brass axle through.
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Almost done with the trigger mechanism. Didn't take many pics while working.
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Another angle. The trigger assembly is on correctly at this point, but some of the pieces are missing from the internals yet.
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Finished. Took about 5 hours. Left out the right side safety switch. The hex screw that held it in got stripped so I left it off.
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Like a boss.