The KWA D-52 safety lever plunger fits multiple KWA M1911 models. It appears on all MK Series M1911s and the new M1911A1 as part 58, and on the discontinued M1911DS as part 47.
The G-105 screw fits multiple KWA items, and appears on respective diagrams as M9 Part 69, Vector part 501, KM4 AEG parts 204 and 205, RM4 ERG parts 205 and RM4 Mechbox-365, and LM4 part 169.