Nuprol RZR
 
Biodegradable 0.30g BBs
 are high-quality, triple-polished airsoft ammunition, available in a 3500-round count bottle. They are designed for precision and consistency, making them ideal for high-performance or upgraded airsoft replicas, including those with tightbore barrels. 
Product Specifications
According to various retailers and the manufacturer Nuprol, the 
RZR Bio-BBs
 have the following specifications: 
Weight: 0.30g. This weight offers a good balance of speed and stability, suitable for outdoor fields and improved accuracy/range compared to lighter BBs.
Quantity: 3500 rounds per bottle. The standard RZR bottle size was increased from 3300 to 3500 rounds in a packaging update.
Material: Biodegradable plastic, meeting the internationally recognized ISO standard for controlled aerobic compositing (DIN EN 13432:2000 | ISO 14855-1:2012).
Diameter: 5.95 mm, with a low tolerance of +/- 0.01 mm.
Finish: Triple polished for enhanced flight performance and reduced feeding issues.
Compatibility: Suitable for all 6mm airsoft guns, and an excellent companion for high-performance replicas featuring tightbore inner barrels (<6.03mm).