
| Type | TP, T154 |
|---|---|
| Projectile | steel, black, 1 copper driving band Projectile Markings: (white ink) 20MM TP T 154 KOP-84-1 Driving Band Markings: *HMC-1-2 52 20MM T61E4* |
| Case | brass, knurled choke crimp |
| Primer | electric, flat, brass, 3-stake crimp, red annulus |
| Headstamp | F A * 52 * |