Cylinder/ HEAD/ SET + INFO

N-B Cylinder: Nickel plated standard size cylinder.
Teflon Cylinder: Has a smoother inside and is best for high speed.
Bore Up Cylinder: Has a larger cavity, which produces more air. Should be used with a M140 spring or higher.

NOTE: The description might not relate only to the particular item, but that of the general case

Cylinder Hole Location vs Barrel Length
All posted Cylinder Lengths vs Barrel Lengths are Manufacturers recomendations. These lengths are designed as a guideline only. Changes in cylinder type or Barrel may result in loss or gain of fps and or increase or decrease in rate of fire.

List of what ranges of barrel lengths which cylinder types are recommended for
(ports = holes in the cylinder)

  •  Barrel: 110-170 mm Length 
     Cylinder Type 1-2:  Contain ports halfway down the cylinder 
  •  Barrel: 270-430 mm Length 
     Cylinder Type 3-4:  Contain ports 3/4 of the way down the cylinder, measured from the front (or cylinder head end) of the cylinder 
  •  Barrel: 364-460 mm Length
     Cylinder Type 4-5:  
    Contain ports 4/5 of the way down the cylinder, measured from the front (or cylinder head end) of the cylinder
  •  Barrel: 450-580 mm Length 
     Cylinder Type 0
    :  Do not contain any ports
  • Barrel: Exceeding 600 mm Length
    Bore-up kits: Contain completely new parts (cylinder, cylinder head, piston head, air nozzle) which have been designed to allow for a larger volume of air to be stored and pushed down the barrel. These kits are intended for use with very long barrels generally exceeding 600 mm.

NOTE: It's a common misconception that simply installing things like bore-up kits and Type 0 cylinders in your gun will allow you to crank a higher FPS out of your average AEG.

NOTE: You want to get your volumes of your cylinder and barrel to match up as closely as possible. Having less volume in your cylinder than in your barrel will create FPS problems because the BB will begin to slow down before it even makes it out of the barrel. While a little more volume in your cylinder than in the barrel will not hurt anything, a general rule is it not have more than twice the volume of your cylinder as is in the barrel. This can cause problems due to turbulent air flow following the BB out of the barrel.

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