Prometheus Stainless Hard Cylinder (Type A: Non-Ported) BBs & Loaders Switch between a 2 MOA

Switch between a 2 MOA dot & 65 MOA Circle with dot

but also CNC machine a wide variety of AR15 components

fill stations

Slightly angled for better ergonomics and look

Accessory slot on bottom of stock for mounting of optional bipod rail

Prometheus Stainless Hard Cylinder (Type A: Non-Ported) BBs & Loaders Switch between a 2 MOAUsing 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.