well I bought a Used/Parts Weihrauch HW100 that had a missing cylinder, a Leak and a trigger problem, fixed the leak and replace the cylinder, but the trigger won't hold the Hammer in the cocked mode, gun fires on it's own when closing the side lever, checked the trigger sear and found the center sear holding the main bolt sear was worn out, checked all HW100 parts places but no one has any, well I decided to fix it myself since I have a wire feed welder, took the trigger apart and did a very small weld on the tip of the center sear, looked like a good weld, use a Rat tail file and a flat file to shape the metal, after several reassemblies, removals and refiling, I got it to work , buffed the burrs off and reassembled, test the trigger and it works perfectly, Took about 2 hours to do, saved myself about $200.00, the cost of a new Trigger assembly, (Which no one had in stock), if you have a worn out trigger and a Wire feed welder, you can save a lot of money fixing it yourself, sorry I didn't take any pictures.