PDI springs have a perfect variable pitch, providing light compression and fast return. Some springs use a different variable pitch, but this simply means connecting sections with different pitches. These are difficult to compress and do not provide the desired power.
PDI uses chrome-silicon steel to manufacture its springs. In addition, they can precisely adjust the pitch using this steel to offer different power levels.
PDI springs do not shrink! Normally, a spring shrinks between 1,45 mm and 20 mm. We can control it to less than 1,43 mm, even down to 5 mm.
Spring version: 170
Power (Joules): 0.7 J
Velocity (FPS with 0.2 g BB): 380 FPS
PDI uses chrome-silicon steel to manufacture its springs. In addition, they can precisely adjust the pitch using this steel to offer different power levels.
PDI springs do not shrink! Normally, a spring shrinks between 1,45 mm and 20 mm. We can control it to less than 1,43 mm, even down to 5 mm.
Spring version: 170
Power (Joules): 0.7 J
Velocity (FPS with 0.2 g BB): 380 FPS
