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FPS Steel Spring for WELL MB01 - FPS

10.90

Tax included Product made to order generally delivered in 7/10 working days.

Specific FPS spring for WELL MB01 (L96 type) sniper rifle. Calibrated for the original mechanism. Made of EN10270/2 (Si-Cr) carbon steel, burnished and pre-tempered, heat-treated. Variable pitch coils and ground ends. Available in different power levels (90-140 m/s). 100% Made in Italy. Pay attention to the final power and the effect of bearings.

Size Guide

This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.

Men's Sizes

International	XS	S	M	L	XL	XXL	XXXL
Europe	32	34	36	38	40	42	44
US	0	2	4	6	8	10	12
Chest Circumference (inches)	33-35"	36-38"	39-41"	42-44"	45-47"	48-50"	51-53"
Chest Circumference (cm)	84-89	91-97	98-104	107-112	114-119	122-127	129-134
Waist Circumference (inches)	28"	30"	32"	34"	36"	38"	40"
Waist circumference (cm)	71	76	81	86	91.5	96.5	101.5

LOWA FOOTWEAR SIZE CHART

SIZE SELECTION:

THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)

conversion chart: UK size - (IT size) - size in mm

Size 6.5 (40) 257mm

Size 7 (40 3/4) 262mm

Size 7.5 (41.5) 266mm

Size 8 (42) 270mm

Size 8.5 (42.5) 274mm

Size 9 (43 1/4) 278mm

Size 9.5 (44) 283mm

Size 10 (44.5) 287mm

Size 10.5 (45) 291mm

Size 11 (46) 295mm

Size 11.5 (46.5) 300mm

Size 12 (47) 304mm

Size 12.5 (48) 308mm

Size 13 (48.5) 312mm

NEED ADVICE ON CHOOSING A SIZE?

Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!

e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!

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Durezza Molla

M 90
M 100
M 120
M 140

Quantity

available on order!

Description
Product Details

This FPS spring is a high-quality component, 100% Made in Italy, designed and specifically calibrated for the original mechanism of the WELL MB01 (L96 type) airsoft sniper rifle.

Materials and Construction:

Material: Burnished and pre-tempered carbon steel wire with added silicon and chromium (EN10270 / 2), for maximum strength and durability.
Heat Treatment: After forming, the spring is stabilized in an oven at 400°C for 30 minutes.
Variable Pitch Design: Features variable pitch coils in the central area and near the spring guide for smooth compression.
Ground Ends: Ensure a flat support and optimal performance.

Calibration and Performance:

The indicated power (e.g., 90 m/s, 120 m/s) has been calibrated on the original WELL MB01 mechanism.
Variations: Actual performance (FPS/Joule) will vary based on barrel length and air seal quality.
Bearings: Calibration does not account for the thickness added by bearings on the spring guide or piston head (an increase of approximately 2.5 m/s is estimated for each bearing).

Technical Specifications (common to 90-140 m/s variants):

Type: Spring for sniper rifle (Bolt Action - L96 Type)
Compatibility: Specifically calibrated for WELL MB01 (original mechanism). May be dimensionally compatible with other L96/APS-2 systems, but performance will vary.
Material: EN10270 / 2 (Si-Cr) burnished and pre-tempered carbon steel
Design: Variable pitch, ground ends
Brand: FPS
Production: 100% Made in Italy
Length: 235 mm
Outer Diameter: 10.25 mm

Available Variants:

Nominal Power (m/s)*
*Power calibrated on the original Well MB01 mechanism. Actual performance may vary. Does not consider bearing thickness (+2.5 m/s per bearing). Always verify final power.
90 m/s
100 m/s
120 m/s
140 m/s

Advantages:

Made with the highest quality steel and specific treatments
Variable pitch design and ground ends
Specifically calibrated for the original WELL MB01 mechanism
100% Made in Italy

IMPORTANT - WARNING:

The indicated nominal power (m/s) is a reference value. Always verify the actual power of the replica with a chronograph after installation to ensure you remain within legal limits (e.g., 1 Joule in Italy) and the limits allowed by the playing field.