AEG PIANO Spring with Progressive Coil by Action Army – Strength of M120.
Suitable for airsoft gun upgrades.
Made from spring steel Piano Wire.
Progressive winding for gentler startup and reduced stress on gears and motor.
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The spring is a key component of the gearbox because its strength, together with air seal quality, directly affects the overall performance of the gun. Low-quality springs may initially offer higher-than-rated performance but tend to lose tension quickly, shorten, or even break—especially if stored compressed or left in pre-cocked mode.
The PIANO upgrade spring from Action Army is engineered for maximum performance consistency and long service life. Crafted from high-grade spring steel, it resists wear even during high-rate-of-fire scenarios.
Its progressive coil starts off soft and becomes stiffer, easing the load on the gear mechanism and motor. Each spring is pre-tensioned at the factory, ensuring stable performance from the first cycles—unlike cheaper alternatives.
When installing a spring with progressive winding, the compressed end (the section with tighter coils) goes onto the spring guide.
Specific References
Retro Arms has come out with another piece that helps you build an upgraded beast exactly to your specifications.
A quality spring of standard length with progressive winding for AEG gearboxes, rated at M130.
Progressive (variable) winding makes the spring easier to compress.
Made from valve wire alloyed with silicon and chromium (SiCr).
AEG Progressive Spring M135 by ASG ULTIMATE with red marking.
Color-coded stiffness for easy identification.
Ideal for airsoft gun upgrades.
Made from military-grade SiCr spring steel.
Progressive winding for smoother startup and reduced strain on gears and motor.
Where to with an empty magazine? Into the dump pouch, of course! The airsoft magazine pouch is a practical tool for better organization of ammunition and helps to reload faster.
LIGHTWEIGHT COOLMAX® Socks by Helikon-Tex in black.
Lightweight durable socks for warm weather.
Prevents overheating thanks to the breathable COOLMAX material.
Seamless technology and anatomical shaping ensure comfort even during long wear.
Guarder Progressive Spring for AEG with a stiffness of SP150 (M150).
Offers performance of 143 - 152 m/s.
Made from tempered Si-Cr wire.
Progressive (irregular) winding of the spring eases compression in the initial phase.
Performance consistency even after thousands of shots.
Fits standard TM AEG gearboxes and manual SVDs.
A modular pouch, which thanks to its simple but original construction is fit for carrying a pistol magazine. It can hold a single magazine and has been sewn from durable nylon material. The inside features a special safeguard made of polymer that prevents the magazine from falling out.
Guarder Progressive Spring for AEG with a stiffness of SP140 (M140).
Offers performance of 134 - 143 m/s.
Made from tempered Si-Cr wire.
Progressive (irregular) winding of the spring eases compression in the initial phase.
Performance consistency even after thousands of shots.
Fits standard TM AEG gearboxes and manual SVDs.
Guarder Progressive Spring for AEG with a stiffness of SP120 (M120).
Offers performance of 113 - 122 m/s.
Made from tempered Si-Cr wire.
Progressive (irregular) winding of the spring eases compression in the initial phase.
Performance consistency even after thousands of shots.
Fits standard TM AEG gearboxes and manual SVDs.
AEG Progressive Spring M115 by ASG ULTIMATE with yellow marking.
Color-coded stiffness for easy identification.
Ideal for airsoft gun upgrades.
Made from military-grade SiCr spring steel.
Progressive winding for smoother startup and reduced strain on gears and motor.
AEG Progressive Spring M125 by ASG ULTIMATE with orange marking.
Color-coded stiffness for easy identification.
Ideal for airsoft gun upgrades.
Made from military-grade SiCr spring steel.
Progressive winding for smoother startup and reduced strain on gears and motor.
The ANAREUS winter camouflage suit is the right companion for snowy environments and is therefore ideal for tactical operations or hunting expeditions in snowy terrain. Not only will you look good in it, but it will also protect you well from the elements. Generation 2 also brings several improvements!
U.S. Navy Seals 35x107 mm silencer by FMA in tan.
U.S. Navy Seals markings on the suppressor.
A lightweight and durable suppressor serving as an imitation.
Suitable for AEG, GBB, GBBR, and HPA weapons.
Installation on a 14mm counterclockwise (CCW) or clockwise (CW) thread.
Sound-dampening inserts and a spacer spring are included.
ETU unit Scylla V2 by JeffTron with cabling output to the stock.
Optical and magnetic sensors for maximum reliability.
Wireless setup via an app for iOS and Android.
Adjustable trigger sensitivity and firing speed.
Various firing modes (pre-cocking, binary trigger, burst, and more).
Compatible with TM standard V2 gearboxes.
Easy installation and high reliability.
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