This week at work I worked on something I never would have imagined. I got to disassemble and repair an AR-15 Rifle for the Law Enforcement Simulator! It has a recoil kit installed to work with simulator system, but the thing was having issues. It runs off a magazine with CO2 cartridges, but as soon as you insert the magazine it rapid fires till it seizes up and runs out of CO2. Replaced all the gaskets, but didn’t get anywhere with it.
Was still an interesting project!