BBs BLS Stainless UH 0.43 g — Grey

BLS Stainless UH are airsoft BBs weighing 0.43 g, made from plastic with a metallic powder additive and manufactured to a diameter tolerance of ±0.01 mm around a nominal diameter of 5.95 mm. The pack of 2,300 BBs in a resealable bag is designed for airsoft players using guns fitted with an adjustable hop-up who need a heavier BB to stabilise the trajectory.

At 0.43 g, these BBs sit firmly in the heavyweight category: the greater mass compared to standard weights of 0.20 g or 0.28 g reduces wind drift and lessens the effect of air turbulence, improving trajectory consistency at medium and long range. The trade-off to consider is that the same mass requires a spring or propulsion system with enough power to generate the backspin needed for the hop-up effect. On guns whose motors or pistons are not tuned for heavy BBs, the trajectory will be flat or dropping rather than stable.

The controlled diameter of 5.95 mm with a tolerance of ±0.01 mm limits the cross-sectional variation that causes jams in the hop-up chamber and inconsistencies in spin. The metallic powder additive gives the BB its characteristic grey colour and contributes to uniform density, which matters for shot-to-shot repeatability throughout a session.

Key features

• Weight of 0.43 g, suited to upgraded guns that require heavy BBs to stabilise the trajectory at medium and long range.
• Nominal diameter of 5.95 mm with a ±0.01 mm tolerance for smooth feeding through the hop-up chamber and fewer jams.
• Metallic powder additive for uniform density and reduced weight variation between individual BBs.
• Pack of 2,300 BBs in a resealable bag — practical for carrying and keeping unused BBs protected from moisture and dust.

In the box

• 2,300 BLS Stainless UH 0.43 g BBs in a resealable bag