This is a SURPLUS 7-round magazine for Destroyer carbines in 9mm.
Built from steel with individual witness holes and a welded baseplate, these 7-round surplus magazines are in impressively good condition but still used, so they may show some blemishes or scratches. Spain’s Destroyer carbine was essentially a scaled-down Mauser rifle, providing soldiers with a lightweight, bolt-action carbine that fired the then-popular 9x23mm Largo ammunition. This produced minimal recoil and made the Destroyer rifle a cheap rifle to shoot.