ASG Ultimate AEG Spring

Price: $7.99 – $10.99 — In stock at 2 retailers.

Action Sport Games brings us another line of high quality upgrade part from their Ultimate series. These are the ASG Mil-Spec AEG Springs. These are high quality springs designed to deliver consistent performance. These springs are made from firearm grade steel for the best durability and lifespan. Ratings available are from M95 up to M135. Springs are color-coded for easy identification. All springs are calibrated and tested at the factory and specifications are delivered from a test gun with a 300mm 6.03mm tight bore barrel, volume matched cylinder, and 0.20g BB's with zero hopup engagement . Your final FPS will vary based on your parts used. Professional installation is recommended. No returns on springs. Springs - made from mil-spec steel - silicon chromium (SiCr). Springs made from cheaper materials that are not treated fatigue sooner rather than later or can possibly snap. A snapped spring can lock up your gearbox, damage other parts, give you low FPS. Progressive coils - gives your gears a soft start which eases stress on mechanical and electrical components. Typically springs that are linear do the opposite. You might not notice this but efficiency will be further enhanced by going with a progressive coil spring. Closed flat ends - prevents alignment issues and flexing assosciated with cut springs which reduces rate-of-fire or can cause other cycling problems. Pre-compressed - extra lengthy spring means less tension loss after initial install. Springs can "settle" shortly after install giving you lower fps than your initial expectation. Warning: these springs are longer than competing brands and might be difficult to install for amateur techs. Black zinc plating - extra corrosion protection which could compromise the springs integrity if rusted. Ratings: Blue = M95, Springrate 0.447N/mm ~300-320fps w/0.20g Green = M105, Springrate 0.467N/mm ~340-360fps w/0.20g Yellow = M115, Springrate 0.519N/mm ~370-390fps w/0.20g Orange = M125, Springrate 0.826N/mm ~400-42