| Term | Translation | Definition |
| balistique | ballistics | ... |
| balistique extérieure | external ballistics, exterior ballistics | ... |
| balle 1/2 blindée | semi-jacketed bullet | ... |
| balle à antérieur côné | coned bullet | ... |
| balle à antérieur semironde | hemispherical bullet | ... |
| balle blindée | full jacketed bullet, full metal cased bullet, full metal patched bullet, solid jacket bullet, solid bullet | ... |
| balle expansive | expanding bullet | ... |
| balle ogibale à tête plate | ogival bullet with flat point | ... |
| balle ogivale | ogival bullet | ... |
| balle ogivale(bi-) | biogival bullet | ... |
| balle ronde | round ball | ... |
| balle, projectile | lead bullet | ... |
| balleblindée | full-jacketed bullet | ... |
| bande ventilée | ventilated rib | ... |
| barillet | cylinder | ... |
| bielle | trigger bar | ... |
| boîte complète | pressed air cylinder | ... |
| boîte de culasse | receiver, breechcasing, breechpiece | ... |
| bonde pleine | solid rib, box rib | ... |
| bordure | case rim, shell rim | ... |
| bourre | wad | ... |
| bouton de réglage | rearsight slide | ... |
| branche ascendante de la trajectoire | ascending branch of trajectory | ... |
| bretelle | carry sling, carrying strap, gun sling, rifle sling | ... |
