Set cylinder (Bore-Up) for AK47/AK47S (Variant type) - SHS

Bore-up cylinder set for AK47/AK47S (Variant type)

This is a complete set of air conditioning + delay cam

• Nozzle – 19.7 mm long, aluminum, one sealing O-ring
• Cylinder head – Aluminum, funnel-shaped rubber stop, two sealing O-rings
• Cylinder – Aluminum, ribbing for improved thermal properties.
• Piston head – Material POM – Polyacetal, a strong and lightweight plastic that does not suffer from shape changes (bursting) like aluminum heads. Steel core for screw mounting. Rubber funnel-shaped stop head, ball bearing.
• Delay cam for piston gear - polymer

Bore-up is the name for parts that have an enlarged shape to accommodate the largest possible volume of air. Simply put: more air in the cylinder means greater pressure in the barrel and thus increased guns performance. These parts are primarily intended for guns with longer barrels, or when replacing the basic barrel with a longer one (e.g., by extending the inner barrel into the silencer).
However, Bore-up sets require sufficient power to achieve the desired performance, so it is generally recommended to use M130 springs and above.

• Compatibility with other sets: NBU Guarder, NBU Systema
• Compatibility with gearboxes: Gearboxes according to Tokio Marui standard
• Tested: Classic Army, SHS, Super shooter, Retro Arms, CYMA

Recommendation: Cylinders are supplied by the manufacturer slightly dusty on the inside. Before installation, we recommend cleaning all parts with silicone spray for proper operation, polishing with a cloth or paper towel, and then lubricating with silicone or Teflon paste.