US Cartridge, 37mm HE-T, SD, M54
The base of the projectile is very thick (over 1 inch) and is tapered for streamlining purposes. The cavity for the shell-destroying tracer is machined into this heavy base. The bursting charge of 0.10 pound of tetryl is pressed into the body in two increments: a base pellet and a main charge.
The M54 is painted olive drab and stenciled in yellow.
Collaborative Ordnance Data Repository