HPA 0.25g Biodegradable Airsoft BBs, 4000 Ct.
Dominate the field with precision and responsibility using HPA 0.25g Biodegradable Airsoft BBs. Crafted to deliver outstanding consistency and accuracy, these BBs are the go-to choice for players using AEGs, gas blowbacks, or HPA systems. The 0.25g weight is perfect for balanced outdoor gameplay with stable flight and reliable impact.
Made from eco-friendly PLA, these BBs are fully biodegradable and field legal. Each bottle includes 4000 premium BBs that are double polished for optimal feeding and flight stability. Whether you're a weekend warrior or MILSIM regular, these BBs deliver top-tier performance. Available online at Gray Dragon Airsoft.
- 0.25g weight optimized for accuracy and consistency
- 4000-count bottle for extended gameplay and training
- Biodegradable PLA construction for eco-safe use
- Double-polished surface for seamless feeding and shooting
- Compatible with AEGs, HPA, and gas-powered airsoft guns
- Brand: HPA
- Model/MPN: HPA025BIO4000
- Ammunition Type: 6mm Airsoft BB (Not for Airgun/Paintball use)
- Weight: 0.25g
- Diameter: 6mm ±0.01mm
- Count: 4000 rounds
- Color: White
- Material: Biodegradable PLA
- Recommended Use: Outdoor, indoor, AEGs, GBBs, HPA platforms
- Shipping Weight: Approx. 2.5 lbs
- Perfect mid-weight balance for velocity and outdoor wind resistance
- Eco-safe design accepted at all major outdoor fields and MILSIM events
- Ultra-smooth double polish drastically reduces inner barrel jams
- Solid core injection molding prevents air bubbles and inconsistent flight paths
- Outdoor Skirmishes & MILSIM Events
- Indoor Airsoft Arenas
- High Rate of Fire (ROF) Builds
- Standard and Precision Tightbore Barrels
- Target Practice and Tactical Training
- Keep the BB bottle tightly sealed when not in use to avoid exposure to moisture and premature degradation.
- Avoid storing biodegradable BBs in hot, direct sunlight, such as the trunk of your car on game days.
- Never reuse BBs that have been fired or dropped on the ground to protect your inner barrel and hop-up bucking from dirt and debris.
- Ensure your mid-cap magazines are completely emptied after play to keep the tension springs strong and feeding smoothly.
- ✔ 100% Environmentally Friendly PLA Material
- ✔ Strict 6mm ±0.01mm Tolerance Guarantee
- ✔ Double-Polished High-Flow Precision Finish
- ✔ Field Legal and MILSIM Compliant Worldwide
- ✔ In Stock and Dispatched directly by Gray Dragon Airsoft
Are these BBs legal for outdoor fields that mandate biodegradable ammo?
Yes. These are made from organic PLA materials designed to break down naturally over time, meeting the strict requirements of outdoor airsoft parks and national event organizers.
Will a 0.25g weight drop my rifle's FPS compared to 0.20g BBs?
Your muzzle velocity (FPS) will measure slightly lower than a 0.20g BB, but you will gain significantly better accuracy, tighter groupings, and wind resistance at longer distances.
Can I use these inside tightbore inner barrels (like 6.01mm or 6.03mm)?
Absolutely. Thanks to the double-polished finish and exact 5.99mm-6.01mm actual diameter variance, they feed reliably through high-precision internal setups.
Do these BBs expire inside the bottle?
As long as the bottle is stored in a cool, dry place and kept securely sealed, they will remain in perfect operational condition for years without degrading prematurely.
The HPA 0.25g Biodegradable Airsoft BBs are precision-engineered 6mm organic PLA ammunition optimized for AEGs, gas blowback (GBB) pistols, and HPA systems. Featuring a double-polished finish with a strict ±0.01mm tolerance, these eco-friendly 4000-count white rounds deliver balanced tactical velocity and wind-resistant accuracy for indoor arenas and outdoor MILSIM matches. Note: This product is strictly for standard 6mm airsoft use and is not intended for airguns, pellet guns, or paintball markers.
Orders for this item typically ship within 1 business day. Inventory levels can change rapidly. Please contact Gray Dragon Airsoft for time-sensitive orders or inventory verification.
WARNING: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov.
This product consists strictly of 6mm airsoft ammunition. In accordance with California SB199 regulations, ensure all corresponding airsoft markers utilize mandatory blazing orange muzzle tips or clear/bright color marking configurations as required by law. Check local municipal ordinances regarding the transportation and deployment of airsoft equipment.
Airsoft products are intended for recreational use by responsible individuals. Purchasers must comply with all federal, state, and local laws regarding ownership, transportation, and use. Always wear approved eye protection. Never display airsoft products in public areas. Adult supervision is recommended for minors. Gray Dragon Airsoft is not responsible for misuse, modification, or improper operation of this product.
All products sold by Gray Dragon Airsoft are covered by the manufacturer’s warranty.
