| Term | Translation | Definition |
| cachas | grip panel, grip plate | ... |
| caja de cierre completa | pressed air cylinder | ... |
| cajòn de mecanismos | receiver, breechcasing, breechpiece | ... |
| cama de cápsula fulminante | primer pocket | ... |
| camisa de bala | jacket | ... |
| cañón | barrel | ... |
| cañón calibre 22, cañón de pequeño calibre | small bore barrel (cal. 22) | ... |
| cañón liso | shotgun barrel, smooth bore barrel | ... |
| cañón rayado | rifle barrel | ... |
| cantonera | buttplate | ... |
| cantonera de goma para el retroceso | rubber recoil pad | ... |
| cantonera regulable | adjustable recoil pad, adjustable butt plate | ... |
| cápsula de CO2 | pressure bottle | ... |
| cápsula fulminate | primer | ... |
| carabina de competición | target rifle, match rifle | ... |
| carabinade dos cañónes superpuestos | superposed rifle | ... |
| carabinade dos cañónes yuxtapuestos | double barreled rifle, side-by-side rifle | ... |
| carabinade tres cañónes | three barrel rifle, drilling | ... |
| cargador | magazine, clip | ... |
| cartucho de bala | ball cartridge | ... |
| cartucho de bala por escopeta | ball cartridge for shotgun | ... |
| cartucho de caza | shotshell, shotgun shell, shotgun cartridge, shot cartridge | ... |
| cartucho de percusión anular | rimfire cartridge, rime-fire cartridge | ... |
| cartucho de percusión central | center fire ball cartridge | ... |
| cartucho flobert | flobert rifle cartridge | ... |
| cartucho por narcotizar | stunning projectile | ... |
| cartuchos para pistola | cartridge, round, shell | ... |
| casquillo | case rim, shell rim | ... |
| cerrojo | slide, bolt, breech | ... |
| chapa del aza | sight-leaf | ... |
| cilindro | cylinder | ... |
| cima de la trayectoria | apex of trajectory | ... |
| composición fulminante | priming mixture | ... |
| compuerta de carga | loading port, loading gate | ... |
| compuerta de expulsión | ejection port | ... |
| contrallave | side plate, lock plate | ... |
| cubierta | wad | ... |
| cubremira | front-sight cover | ... |
| cuchillo de monte | hanger, hunting cutlass | ... |
| cuelle de la culata | grip of butt, hand of butt, small of butt | ... |
| cuerpo de vaina | case body | ... |
| cuerpo del cargador | magazine body | ... |
| culata articulado | offset stock | ... |
| culata con prot.d.c. | cheekpiece | ... |
| culata, caja | stock | ... |
| culote | brass base | ... |
