7-4 Figure 7-4.—Example of color coding and marking for M50 configuration ammunition. Projectile Type (Expect as noted) Color of Painting Color of Marking Locations (See Figure 7-4) A B C D Dummy M51A1B1/M51A2 Chromate finish Chromate finish Chromate finish Chromate finish Black High Pressure Test M54A1 (HPT) No paint (copper) Purple Purple Purple Black Target Practice (TP) M55A2/M55A2B1 M55A3/M55A3B1 No paint (copper) Blue Blue Blue White High Explosive Incendiary (HEI) M56A3/M56A4 No paint (copper) Yellow Red band in B₁ area No paint (chromate) No paint (chromate) Black Target Practice Tracer (TP-T) M221 (M220 cartridge) No paint (copper) Blue Blue Blue White with Orange T's (at location B₁) High Explosive Incendiary-Tracer (HEI-T) M242 No paint (copper) Yellow Red band in B₁ area No paint (chromate) No paint (chromate) Black with Red T's (below B₁) Plastic Dummy Cartridge M254 No paint (white plastic) No paint (white plastic) No paint (white plastic) No paint (white plastic) Black Table 7-2.—Color Coding and Marking for M50 Configuration Ammunition