Aluminum is a light elemental metal notable for its relative lightness and resistance to corrosion. It is a soft metal which is easy to shape […]
Various options for piston head
We do not see any reason why you should use a “metallic” piston head. The stock piston head is good at absorbing much of the […]
Piston head one-way
Upgraded piston heads usually have holes on the front face of the head. When the piston is moving forward, air goes through these holes and […]
Barrel length
What is a quick and easy way to determine the cylinder to use for an extended barrel? Refer to the barrel length table below. If, […]
Cylinder aux ports
Different guns use different cylinders that have different number and position of openings. Let’s look into the number and position issues separately. Talking about the […]
Cylinder volume
If you are upgrading your MP5K / MP5K PDW or G3 SAS with a longer barrel, you will want to change the stock cylinder because […]
Bore-Up cylinder
A Bore-Up cylinder is a cylinder with extra capacity for storing pre-compressed air. You may consider the use of a Bore-Up cylinder if: you have […]
Spring rotation
Spring rotation can reduce stress for the gears only if both ends of the spring are free for spinning. As a cheap way to facilitate […]
Stainless steel spring and telfon coated spring
Stainless steels will not rust, making them ideal for environments containing water or steam. Power-wise, being stainless or not doesn’t seem to be relevant. Telfon […]
Systema spring vs PDI spring
Systema springs are in general longer and harder, while PDI springs are shorter and a little softer. Both of them are from Japan and are […]