AC-58, 1987
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The Grenade à Fusil antichar de 58 mm avec piège à balle modèle F1 is a French antitank rifle grenade designed in the late 70s, to be fired from the FAMAS F1 by using a standard ball cartridge.
Equipped with a bullet trap, this may be balle O (Ordinaire, ball) or T (Traçeuse, tracer), US M193 or FN SS92.
The technical specifications are as such:
| Grenade weight | 537 grammes |
| Length | 39 centimetres |
| Explosive weight (RDX-TNT) | 145 grammes |
| Effective range | 75 metres |
| Zenith (fired at 75 m) | 2 metres |
| Maximum range (fired at an angle of 45 degrees) | 319 metres |
| Flight time (fired at 75 m) | 1.3 seconds |
| Spread (weapon in a mount, fired at 75 m) | Less than 1.3 metres height plus width |
| Penetration | |
| 250 millimetres of steel at 0 degrees | |
| 130 millimetres of steel at 60 degrees | |
| 1 metre of concrecte at 0 degrees |
The AC-58 also served as the basis for the Luchaire WASP 58 mm, a disposable single-shot antitank weapon.
Information is particularly scarce on this system: though Wikipedia claims it had several users, none of this is all too credibly sourced.
The archive of manuals can be found here.