BBs BLS BIO Ultimate Heavy 0.40 g — White

The BLS BIO Ultimate Heavy are biodegradable BBs weighing 0.40 g, made from PLA polymer and supplied in a resealable bag of 2500 rounds (1 kg). They are designed for airsoft guns that require high mass to stabilise the trajectory at medium and long range.

The diameter of 5.95 mm ± 0.01 mm ensures a tight dimensional tolerance, reducing play between the hop-up bucking and the inner barrel. On platforms with a well-tuned hop-up, a heavier BB like this holds its line better than a lighter one at the same backspin, at the cost of a lower muzzle velocity and greater sensitivity to the propulsion system setup: these are BBs for players who have already optimised their airsoft gun, not for plug-and-play use on any system.

The BIO PLA material makes them biodegradable, a relevant feature for anyone playing outdoors or on fields that require eco-compatible consumables. The resealable bag lets you take out what you need and store the rest without risk of spillage.

Key features

• The 0.40 g weight stabilises the trajectory at medium to long range on high-powered airsoft guns or those with a well-configured hop-up.
• The ± 0.01 mm diameter tolerance limits flight irregularities caused by dimensional variation between individual BBs.
• Biodegradable PLA polymer is compatible with field rules that prohibit conventional BBs in natural environments.
• The resealable 1 kg bag makes transport and storage easy without contaminating the remaining BBs.

In the box

• 2500 BBs BLS BIO Ultimate Heavy 0.40 g in a resealable bag