Umarex 4.5/500 BBs are spherical steel BBs designed for airguns with smoothbore barrels.
The BBs are intended for air pistols with stick magazines, including models by RazorGun, Umarex, Beretta, Walther, Glock, etc.
Unlike soft diabolo pellets, steel BB's can be safely loaded into higher-capacity magazines without the risk of deformation.
BB's are more affordable and less accurate than diabolo pellets, which is why they are commonly used in airguns for recreational shooting, where fun and long-lasting enjoyment matter most.
Umarex BBs are characterized by good manufacturing quality, which positively affects accuracy and shot consistency.