The MRV-U fuze is designed to complete the high-explosive fragmentation rocket projectiles 9M22U (GRAD).The fuze ensures warhead detonation upon impact on a barrier.It is a nose fuze.
| Type | Mechanic, with distant arming |
| Effect | Three settings (for fragmentation effect; for high-explosive effect with a short delay, and for high-explosive effect with a long delay) |
| Distant arming | It is done along the trajectory straight upon the termination of the operation of the projectile rocket motor. |
| Height of safe falling, m | 5 |
| Fuze weight, kg | 0,710 |
| Connection thread, mm | Sp М 44,96 х 2 |
| Detonating primer diameter, mm | Ø 29,5max |
| Maximum length, mm | 195 |
| Gross weight of the wooden case, kg | 25 |
| Overall dimensions, mm | 520x490x171 |
| Volume, m3 | 0,044 |
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