Hatsan Spring 380m/s Model 125,135,150 and 155

Product description

Full speed spring that fits Hatsan model 125,135,150 and 155. The spring itself is license-free to buy and possess, but the air rifle with this spring mounted may be subject to local licensing requirements, check local legislation.
Springs and internal changes to the weapon must only be carried out by an authorized person.

Hatsan's latest springs are of high quality and have a long service life. The length of the springs may need to be adjusted. We recommend that you rather cut the springs about 3 turns than remove any piston weight. The weapons can be perceived as easier to shoot if you cut a few extra turns. Authorized weapons technicians can provide more information on this. The springs can also fit other weapons if the length is appropriate or need to be reduced.

Exit velocities according to the manufacturer:

Caliber: Muzzle velocity:*
4.5mm / .177 cal 380m/s (1250fps)
5.5mm/ .22 cal 305m/s (1000fps)
6.35mm/ .25 cal 230m/s (750fps)

*Muzzle velocity may vary depending on bullet weight and design.

Specifications:
Length:420mm
Outer diameter:21.0mm
Inner diameter:13.8mm
Number of turns: approx. 45 turns
Thread diameter: 3.5mm

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