5.56 x 45mm United States
Details
| Type | Ball |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | brass, taper crimp |
| Primer | percussion, flat, brass, ring crimp |
| Headstamp | F C 6 8 |
| Notes | 68-grain projectile. |
| Type | Ball |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | brass, taper crimp |
| Primer | percussion, flat, brass, ring crimp |
| Headstamp | F C 6 8 |
| Notes | 68-grain projectile. |