Product Overview

Excellent quality spring made from high performance oil-tempered Japanese SWOC-V steel. This type of steel is generally used in military weaponry and in car engines. The M110 version of this spring was tested in an AEG for over 300,000 shots with zero shrinkage or performance loss.

Outer Diameter: 14.65mm
Inner Diameter: 11.5mm
Wire Thickness: 1.4mm

Important

When choosing an appropriate spring you must match it to the cylinder type and length of the inner barrel. Every AEG is different, use the spring FPS rating only as a rough guide.
Base test was an E&C gearbox shell, ZCI inner barrel, Retro Arms Hop Chamber and Maple Leaf MR 60 bucking.

These springs have been rated with no AOE corrected, no thrust bearing on the piston head but a thrust bearing on the spring guide. Please note on some builds a 15fps increase can be observed just by having a thrust bearing on the piston head. Check the table in the images for the test results.

Spring Rating/Length