Umarex | 4.5mm | Steel BBs | 1500 pcs | Silver

Steel BB's 4.5mm – precision steel ammunition for air rifles and pistols

These steel BB's deliver consistent performance for air rifles and CO2 pistols with their 4.5mm/.177 calibre construction. The 1500-piece bulk packaging provides extended shooting sessions, while the silver steel composition ensures reliable feeding through semi-automatic mechanisms.

Construction and materials

Each BB weighs 0.0004 kilogram and features a uniform spherical design in hardened steel. The smooth surface finish promotes consistent magazine feeding and reduces jamming in repeater systems. The 4.5mm diameter maintains tight tolerances for predictable ballistic performance.

Application and use

Designed for recreational target shooting, plinking, and action shooting disciplines. These BBs perform optimally at ranges up to 10-15 metres, making them suitable for indoor ranges and backyard practice. The steel construction handles high-velocity discharge from CO2-powered pistols and air rifles without deformation.

Integration and compatibility

Compatible with all 4.5mm/.177 calibre BB guns, including spring-piston, CO2, and multi-pump pneumatic systems. The standardised diameter ensures proper fit in both gravity-fed and spring-loaded magazines. Suitable for air rifle platforms requiring steel BB ammunition.

Maintenance and lifecycle

Steel BBs require no maintenance and maintain their shape indefinitely when stored dry. The 1500-count bottle includes a pour spout for easy magazine loading. Note that steel ammunition may cause barrel wear over extended use compared to lead pellets.