5.56 x 45mm United States
Details
| Type | Dummy, M199 |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | brass, taper crimp, 6 flutes, 1 knurled (neck) cannelure |
| Primer | blind |
| Headstamp | L C 6 9 |
| Type | Dummy, M199 |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | brass, taper crimp, 6 flutes, 1 knurled (neck) cannelure |
| Primer | blind |
| Headstamp | L C 6 9 |