Modify PP-2K 6.03mm 300mm Precision Inner Barrel

Modify PP-2K 6.03mm 300mm Precision Inner Barrel The precision inner barrel for the PP-2K gas blowback is 300mm long with a 6.03mm diameter. It is made from high-quality aluminium and is compatible with most GBB hop rubbers on the market due to its enlarged window and unbridged design. Features: For X-range or Predator hop-up bucking Also for Marui hop-up buckings Enlarged window size High Accuracy Material: Aluminum alloy