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Asymmetrical STEEL Spring for AEG - SHS

5.00

Tax included

"Tune Up" AEG spring from SHS with an irregular (progressive) pitch design. Made of quality spring steel wire. Offers long-lasting performance and is suitable for High FPS and High Speed upgrades. Available in different power ratings (from M90 to M190). The actual power (FPS) is indicative and depends on the configuration. Pay attention to legal limits.

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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Description
Product Details

This AEG (Automatic Electric Gun) spring from SHS is a robust and reliable upgrade component, suitable for all types of modifications, including high power (High FPS) and high speed builds.

Main Features:

Material: Made of quality spring steel wire, which maintains its characteristics in the long term (tested on over 10,000 cycles without significant alterations).
Variable Pitch (Progressive/Irregular) Design: The progressive winding of the spring facilitates initial compression and optimizes release, contributing to consistent performance.
Durability: Designed to withstand wear and tear even in elaborate configurations.
Quality/Price Ratio: Considered an option with an unbeatable quality/price ratio in the upgrade market.
Compatibility: Suitable for standard AEG gearboxes (V2, V3, etc.).

Nominal Power (M-Rating) and FPS Estimate:

The "M" value (e.g., M100, M120) is a nominal indicator. The actual muzzle velocity (FPS) strongly depends on multiple factors, including the air seal of the system, the length and diameter of the inner barrel, and other components. The following table provides an approximate estimate of the FPS achievable with 0.20g BBs:

Technical Specifications:

Type: Irregular pitch (Progressive) AEG spring
Material: Spring steel
Brand: SHS
Compatibility: Standard AEG gearboxes (V2, V3, etc.)

Available Variants and FPS Estimate (with 0.20g BBs):

Variant (M-Rating)	Estimated Velocity (FPS with 0.20g BB)*
Estimated Velocity: FPS values are approximate and can vary significantly based on the replica's configuration (air seal, barrel, etc.). Always check the final power with a chronograph to comply with legal limits (1 Joule / ~328 FPS in Italy) and the game field rules.*

M90	~290 - ~340 FPS
M100	~310 - ~370 FPS
M110	~320 - ~380 FPS
M120	~350 - ~440 FPS
M130	~410 - ~490 FPS
M140	~440 - ~540 FPS
M150	~470 - ~600 FPS
M160	~500 - ~660 FPS (Estimate)
M170	~530 - ~720 FPS (Estimate)
M190	~590 - ~840 FPS (Estimate)

Advantages:

Irregular pitch design (progressive)
Made of quality steel
Long-lasting performance (tested > 10,000 shots)
Suitable for High FPS and High Speed upgrades
Excellent quality/price ratio
Wide range of power ratings available

IMPORTANT - LEGAL and TECHNICAL WARNING:

Springs with M100 ratings and higher can easily cause the replica to exceed the legal limit of 1 Joule allowed in Italy (and many other countries) for airsoft games.
It is the end user's responsibility to check the power of their replica with a chronograph after installing the spring and ensure that it complies with current regulations and game field rules.
Installing powerful springs often requires reinforced internal components (piston, piston head, gears, etc.) to ensure the reliability of the gearbox.