5.56 x 45mm United States
Details
| Type | Ball |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | aluminum, taper crimp, light bronze |
| Primer | percussion, flat, brass, ring crimp, red annulus |
| Headstamp | F A 6 8 |
| Type | Ball |
|---|---|
| Projectile | FMJ, GM, 1 knurled crimping cannelure |
| Case | aluminum, taper crimp, light bronze |
| Primer | percussion, flat, brass, ring crimp, red annulus |
| Headstamp | F A 6 8 |