Responsible airsoft players know that ammunition choice matters—both for performance and for the environment. Delta Armory 0.28g BIO EAGLE BBs bridge that gap, delivering the precision and consistency serious skirmishers demand without the landfill guilt. Packed in a convenient 1kg bag, these rounds are the smart choice for outdoor sites, woodland ops, and milsim events where eco-consciousness counts.
Key Features
- Biodegradable PLA polymer – breaks down naturally, site-compliant at eco-aware venues
- 0.28g weight – superior ballistic stability for mid-to-high-powered AEGs and upgraded builds
- Premium polishing – consistent shape and finish minimises jams and feeding issues
- 1kg bulk capacity – economical for regular players, reduces reordering frequency
- White colour – easy to spot on retrieval and field maintenance
Real-World Use Cases
Heavier BBs like 0.28g excel in outdoor skirmish environments where wind drift and accuracy matter. They’re ideal for precision marksmen running upgraded gearboxes, high-torque motors, and tightbore barrels seeking flat trajectories and tighter groupings. Milsim players appreciate the environmental angle; many premium UK sites actively encourage or mandate biodegradable ammunition. For woodland ops and longer-range engagement, 0.28g delivers noticeable range and stability gains over standard 0.20g rounds.
Technical Specifications
- Weight: 0.28g per BB
- Material: Biodegradable PLA Polymer
- Colour: White
- Package Size: 1kg bag (approx. 3,570 rounds)
- Environmental Certification: Biodegradable
Compatibility & Upgrades
0.28g BBs work in any standard airsoft replica with a functional hop-up unit. For optimal performance, pair them with upgraded components: a quality tightbore inner barrel (6.01mm or 6.03mm), precision hop-up bucking, and a strong spring or high-torque gearbox. Lower-powered stock rifles (sub-1.0J) will struggle to stabilise 0.28g rounds effectively—reserve these for 1.2J+ setups. Always check your site’s FPS limits and ammunition rules before use.
UK Legal & Site Notes
Biodegradable BBs are favoured by outdoor sites and woodland venues, especially those with environmental commitments. Many UK milsim events and premium skirmish locations now recommend or require eco-friendly ammunition to protect local ecosystems. Always verify your site’s BB policy before purchase; a handful of indoor CQB venues still demand standard plastic rounds for ease of cleanup. As a 1kg bag is substantial, confirm your gearbox can reliably feed 0.28g weight without modification.
Stock up on Delta Armory BIO EAGLE 0.28g BBs today and enjoy precision, stability, and environmental peace of mind on every deployment. Fast UK delivery, competitive pricing, and expert support—order now.

















