Spring for manual rifles.The basis of airsoft guns, which most affects the range. It is made of the highest quality common spring material VDSiCr, open 70 SC, 33g and ground ends.The surface of the spring is treated with phosphating and special Wurth preservation.

The outer diameter of the spring is 12,9mm, the inner 9mm. The length of the spring is 242mm. When compressed, it fits into a space of 85mm length

Please make sure it can be inserted into your piston before purchasing. This is because the springs are primarily designed for reinforced pistons and will not fit in the original plastic pistons. The piston must have a bore of about 13mm !!!The spring is also not applicable for manual SVD Dragunov rifles.

Weight: 33g