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Home » Airsoft Accessories, Attachments & Parts » Spring Rifle Internal Parts » Sniper Rifle Main Springs

Modify Irregular-Pitch Upgrade Spring for Modify M24 / SSG24 / APS-2 Airsoft Sniper Rifle
(Type: M140 / 9mm)

ID: 25780 (Spring-Mod-M24-M140)
66207008
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Modify Airsoft

$18.00

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Type Options:
TypeM120 / 9mm$18.00
TypeM140 / 9mm$18.00
TypeM150 / 9mm$18.00
TypeM160 / 9mm$18.00
TypeM170 / 9mm$20.00
TypeM180 / 9mm$20.00
TypeM190 / 9mm$20.00
TypeM90 / 9mm$18.00

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Product Description

The Airsoft Spring with irregular-pitch for the MOD24/APS-2 is designed for enhanced performance. Precision manufactured of high grade piano wire with high durability and strength, the Airsoft Spring is easy to install to offer airsoft players who demand very consistent FPS.

Such performance is achieved by putting every Airsoft Spring through exacting quality control tests, starting from the software design phase to final mass production.

Manufacturer: Modify

3 Customer Reviews

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by edmond d. on 01/16/2026
"Just perfect just don’t keep the spring down for too long or FPS will be lost
by Walker M. on 06/15/2024
"Solid 9mm ID springs. Compression settling is minimal (~5 fps loss after 2 weeks, might be 15 total after complete break-in). The FPS numbers, however, are NOT accurate with perfect airseal. Most spring companies advertise for people with stock rifles with crap airseal. With full airseal (compression test perfect at _1 minute at nozzle and barrel) the numbers I got are as follows:

M130: 500 fps
M140: 540 fps
M150: 580 fps
M160: 620 fps
by Alec M. on 12/22/2023
"Heads up, these are 9mm ID springs and do not fit traditional APS2 spring rifles that require 9mm OD springs. They are SSG24 only.

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Modify Airsoft