This metal flash hider spring fits all KM4, RM4, LM4, and AKG rifles, and fits under the flash hider washer to keep tension on the washer and flash hider. It appears on respective diagrams as KM4 part 165, LM4 part 208, and AKG part 381.
The F-6 firing pin spring fits multiple KWA GBB pistols, and appears on respective diagrams as M1911 MK Series and M1911A1 NS2 part 73, discontinued...
This screw fits multiple KWA models, and appears on respective diagrams as M-Series part 18, ATP part 109, M226 part 118, KMP9 part 133, KM4 AEG parts 206 and 208, LM4 magazine part 25, and AKG part magazine part 227.
The I-4 roll pin fits multiple KWA models and appears on respective diagrams as M9 part 92, M93R II NS2 part 120, Vector part 516, KM4 Series part 229, RM4 Series mechbox part 377, LM4 PTR part 193, and AKG Series part 118.