Designed for precision, engineered for performance. Barra Airguns Zinc-Plated Steel BBs have been rigorously tested in a wide range of airguns, across different climates and shooting conditions, ensuring top-tier reliability. While optimized for the 400e full-auto air rifle, these BBs deliver exceptional performance in CO2, multi-pump, and spring-powered airguns alike.Each BB is precisely machined with a high-quality zinc coating, giving it an ultra-smooth finish for superior feeding, accuracy, and velocity. The result? Tighter groupings and more consistent shots, whether you're training, plinking, or competing.Packaged in a re-sealable plastic container, these BBs stay air-tight for maximum longevity. The easy-pour spout ensures hassle-free loading, so you can spend more time shooting and less time dealing with spills. Specifications:Caliber: 0.177 (4.5mm)Material: Zinc-coated steel for smooth feeding and durabilityDiameter: 4.40 0.0025mm (tighter tolerance for enhanced performan...