Earlier this year I picked one up almost NIB (pictured above). The buffer had deteriorated, so I had a local gunsmith make me a new one out of Delrin:
It installs pretty easily and works just fine.
This gun fires from an open bolt, which means the (rather heavy) bolt slams forward when you pull the trigger. This has so far resulted in terrible accuracy at 50 yards - perhaps I just need a little more practice. It uses unmodified grease gun magazines. For me the grip safety seems a little high and I have to think about compressing it when firing. I have several .45 handguns with grip safeties and I don't experience this with them.
What follows are scans of all the documentation of which I'm aware.
Promo:
My warranty may be expired.
Take down:
Zero-zero-zero is the default combination for the safety lock, but there are only 999 other possibilities so I suppose you could figure it out in a few afternoons of watching TV. Here are scans of the lock documentation:
And finally, a letter from Tri-C:
In case that's hard to read, here is the text:
Code:
TRI-C CORPORATION
34 CAMBRIDGE STREET
MERIDEN, CONNETICUT 06450
TELEPHONE 203-238-2838
Be sure grip safety is depressed while firing, as if the
grip is released just after pulling the trigger, the bolt will
recoil and slide up the blocked sear jamming the carbine.
This is a safety precaution to prevent the gun firing if it is dropped.
English soldiers jumping off a truck with the STEN gun
(also fired from an open bolt) slung over their shoulder, found
that the bolt would drop, pick up a round and shoot the man
behind them. This we don't want to happen.
Please clean Bolt Face and Chamber and lightly oil
after firing.
Brass will accumulate under bolt and bolt face. This is
intentional to delay blowback and does no harm.
We suggest you use American made ammuntion as some European
primers are too heavy to fire properly.
Also what are these worth? I have no idea if I paid to much or too little?
Determining market value for something with near zilch market presence is at best guessing. I paid $750 for mine and I'll never sell it for less. On the other hand, I doubt I'll ever sell it very easily.
Hope this helps. Welcome to the fraternity of rare gun owners.