BLS BIO Ultimate Heavy BBs 0.40g — White

Biodegradable BIO PLA polymer BBs weighing 0.40 g, diameter 5.95 mm ± 0.01 mm, packed in a resealable bag of 1,000 rounds. Designed for airsoft, they are intended for guns with a hop-up set for heavier weights: the increased mass reduces wind deflection and improves accuracy at medium to long range compared to standard 0.20–0.28 g BBs, at the cost of a more arched initial trajectory that requires a dedicated hop-up adjustment.

The biodegradable PLA composition allows use on fields that prohibit traditional ABS BBs: the material breaks down over time without leaving persistent plastic residue in the environment. The tight diameter tolerance of ± 0.01 mm ensures smooth feeding through the inner barrel and consistent contact with the hop-up bucking — conditions that directly affect trajectory consistency from shot to shot.

Key Features

• Weight of 0.40 g for greater in-flight stability and reduced wind drift at medium to long range.
• Diameter 5.95 mm ± 0.01 mm: tight tolerance for consistent hop-up bucking contact and repeatable trajectories.
• Biodegradable BIO PLA polymer: compatible with fields requiring eco-friendly BBs.
• Resealable bag of 1,000 BBs: easy to carry and store between sessions.

In the Box

• 1,000 × BLS BIO Ultimate Heavy BBs 0.40 g in a resealable bag