License required spring that fits the following Hatsan models as below.
Springs and internal alterations to weapons shall only be performed by a qualified person.
Strikes S, X, Edge and AR
Airtact ED & PD
Output speeds according to the manufacturer:
Caliber Output Speed *
4.5mm / .177 cal 300m / s (1000fps)
5.5mm / .22 cal 230m / s (700fps)
* The initial speed may vary depending on the weight and shape of the ball.
Length 340mm
Outer diameter 19.3mm
Inner diameter 12.3mm
Number of turns 42 turns
Wire diameter 3.1mm
Member of EU
0
