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5.7x40mm AVA
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5.7x40mm EC | ||||||||
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Type | Rifle | |||||||
Place of origin | Entente Cordiale | |||||||
Service history | ||||||||
In service | 1978–present | |||||||
Used by | Sieuxerr Sylva New Tyran EC | |||||||
Wars | Various | |||||||
Production history | ||||||||
Designer | Saint-Étienne Arms Manufacturer | |||||||
Designed | 1977 | |||||||
Manufacturer | MAS Manurhin Various other plants | |||||||
Specifications | ||||||||
Case type | Rimless | |||||||
Bullet diameter | 5.7mm (0.224 in) | |||||||
Neck diameter | 6.5mm (0.25 in) | |||||||
Shoulder diameter | 8.3mm (0.32 in) | |||||||
Base diameter | 9mm (.35 in) | |||||||
Rim diameter | 9mm (.35 in) | |||||||
Rim thickness | 1.5mm (.05 in) | |||||||
Case length | 40mm (1.57 in) | |||||||
Overall length | 56.4mm (2.22 in) | |||||||
Rifling twist | 1:12 | |||||||
Primer type | Small rifle | |||||||
Ballistic performance | ||||||||
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Source(s): Arsenal Munitions Test Range |
The 5.7x40mm EC is a rimless, bottlenecked, center-fired intermediate cartridge family. Designed in the mid-1970s, the 5.7mm EC and 7x51mm EC cartridges and their weapons would become standardized across the Entente and Entente-aligned nations by the 1980s.