Prometheus Stainless Hard Cylinder (Type A: Non-Ported) BBs & Loaders Counterweights are a good way

Counterweights are a good way to balance the helmet while deploying night vision goggles

- Installation of this device into the gearbox requires advanced technician skills

Extendable stock allows you to adjust the length of a rifle to fits your body

fill stations

Slightly angled for better ergonomics and look

Prometheus Stainless Hard Cylinder (Type A: Non-Ported) BBs & Loaders Counterweights are a good wayUsing stainless which have high hardness and high durability, and the surface having a heat sink for radiating heat which occurred at compression. It makes reducing an accelerating resistance caused by thermal expansion of Piston O ring. Also, they have variation for maintain air volume for various barrel size, and improving the stability of ability.