
- description
RZR is Nuprol's dedicated airsoft BB brand — manufactured to tight tolerances with a consistent 5.95mm diameter and spherical precision that minimises deviation in the hop-up chamber. RZR BBs are made from ABS plastic (standard) or certified biodegradable polymer (Bio range) and are polished to remove seams and surface imperfections that cause inconsistent spin.
Many UK outdoor sites require biodegradable BBs — and increasingly, woodland site operators are making bio mandatory as standard. RZR Bio BBs are made from certified biodegradable polymer that breaks down naturally in outdoor environments. Performance is identical to the standard ABS range — same 5.95mm diameter, same polishing process, same tight tolerances. The only difference is the material.
If you play at both indoor and outdoor sites, keeping a supply of RZR Bio on hand means you're always compliant regardless of site requirements — and running bio at all times is simpler than switching between ranges.
BB weight guide — which weight for your build?
| Weight | Ideal for | Notes |
|---|---|---|
| 0.20g | Indoor CQB, beginners, high-volume play | Lightest, highest FPS reading, least wind resistance — not ideal outdoors |
| 0.25g | General skirmish — the most popular all-round weight | Best balance of range, accuracy, and cost for most AEGs |
| 0.28g | Outdoor field use, upgraded AEGs | Noticeably better range and wind resistance than 0.25g |
| 0.30g | Long-range outdoor, upgraded hop-up | Recommended for AEGs running 350–380 FPS with good hop |
| 0.32g–0.36g | DMR, sniper, upgraded outdoor builds | Heavy — needs a well-tuned hop-up to perform correctly |
| 0.40g+ | Bolt-action sniper rifles only | Very heavy — not suitable for standard AEGs |