Gamo Steel BBs – 4.5mm (Pack of 500)

Gamo Steel BBs are 4.5 mm spherical steel ammunition supplied in a 500-count pack. Official reference 6320634 uses 0.35 g BBs; these are not lead pellets.

Verified specifications

Who this product suits

Use steel BBs only in an airgun whose manual explicitly permits 4.5 mm steel BB ammunition. Do not load them into a pellet-only barrel or magazine.

Compatibility and responsible use

• Use only in an airgun explicitly compatible with 4.5 mm steel BBs.
• Check the airgun and magazine manual before loading; calibre alone does not confirm ammunition-type or magazine fit.
• Test function and grouping safely because individual airguns can prefer different compatible ammunition.

Compare your options

Check live price and availability above. Compare Gamo Round 4.5 mm lead balls, browse all Gamo ammunition, or use the pellet selection guide.

Technical identity was checked against the official Gamo product information and 2026 catalogue.

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Reviewed by the Gamo South Africa product team on 25 August 2026.