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13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](https://airsoftpro.cz/images/stories/virtuemart/product/pdi-tm-aws-upgrade-spring-400fps-2.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](https://airsoftpro.cz/images/stories/virtuemart/product/pdi-l96-aws-400-fps-10.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](https://airsoftpro.cz/images/stories/virtuemart/product/pdi-l96-aws-400-fps-20.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](/images/stories/virtuemart/product/pdi-tm-aws-upgrade-spring-400fps-1.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI] ![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](/images/stories/virtuemart/product/pdi-tm-aws-upgrade-spring-400fps-2.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI] ![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](/images/stories/virtuemart/product/pdi-l96-aws-400-fps-10.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI] ![13mm upgrade spring for TM AWS - 400FPS (M120) [PDI]](/images/stories/virtuemart/product/pdi-l96-aws-400-fps-20.jpg)
13mm upgrade spring for TM AWS - 400FPS (M120) [PDI] 
Upgrade spring for Tokyo Marui L96 AWS. With this spring, you can achieve a muzzle velocity of 400 FPS or 120 m/s. However, if the weapon is properly sealed and assembled, the muzlle velocity can be be higher. Please note outer diameter of the spring is 13mm and inner 11mm. Please make sure it fit in your piston before buy.
PDI air technology
is a Japanese manufacturer known in the airsoft world mainly for its cutting edge quality stainless steel barrels. These are some of the best (and at the same time most expensive) barrels, you can be buy. The company also offers upgrade parts, especially for sniper rifles - cylinders, hop-up chambers and buckings, trigger sets, the aforementioned stainless steel barrels and a cheaper range of carbon steel barrels. Yet the PDI main production area is the manufacturing of training equipment for the police, pepper cannons and pistols and paintball guns.