The spring on the AEG is the most important factor, besides compression parts, in relation to controlling the FPS of your AEG. Guarder is well known for producing high quality, reliable and consistent springs that will never disappoint.

Manufacturer: Guarder

Compatibility: For Tokyo Marui, Matrix and other compatible Airsoft Gearboxes
Material: Steel

(Write a review)

by Robert P. on 11/14/2025

"Guarder main springs are the best in the game imho. my sp85 puts me at .95j and my sp110 right at 1.54j. less than 1fps deviation. very very consistent.

by Nick H. on 08/29/2023

"The SP-150 spring is FANTASTIC for the AS01/AS02 Strikers! Better than the Irregular pitch springs I've had. Every airsoft website is constantly out of Striker SP-500/550/600 upgrade springs and this is comparable to the SP-500 upgrade. I'm slinging .40g with ease using the Guarder SP-150.

HIGHLY RECOMMEND FOR ARES/ELITE FORCE STRIKER BUILDS

by John S. on 01/18/2022

"Hey guys so used this for my new build and it works fantastic!
Here is the parts list, I mostly used guarder for everything except for a few things.
This compression set works great together!
SHS green nozzle
Guarder piston head, sp120 spring, cylinder head, advanced tappet plate, cylinder head
Bolt ported piston

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Parts and accessories may not be compatible with the product displayed on this page. For compatible parts/accessories, see the You May Also Need section and please verify details on the product description page.

Guarder Oil Temper Wire AEG Spring For Tokyo Marui Style AEG(Power: SP-85)

SP-85

$12.00

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Guarder Oil Temper Wire AEG Spring For Tokyo Marui Style AEG
(Power: SP-85)