This rubber O-ring is a direct replacement for all LM4 Series rifles, and fits around the LM4 bolt base, part 60. The ring itself appears as part 191 on LM4 diagrams. Occasional replacement of this part helps restore compression, FPS, and cycling abilities of your KWA LM4. Bolt base sold separately.
The I-25 e-clip fits multiple KWA models, and appears on respective diagrams as M11A1 NS2 part 104, KM4 Series part 242, RM4 part 242, and LM4 PTR part 209.
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 gearbox part 377, LM4 PTR part 193, and AKG Series part 118.
The D-72 hop up cover fits multiple KWA models, and appears on respective diagrams as HK45 part 328, Vector part 96, kz.61 Skorpion part 79, and LM4 PTR Series part 128.