Our take: The M145 Element Airsoft sniper rifle upgrade spring is made for most-all airsoft VSR/ BAR 10 type airsoft bolt action sniper rifle. Constructed of oil-temper wire with an incredible amount of resistance, it is one of the simplest power upgrades you can do for your bolt action airsoft sniper rifle. High quality, low price tag. Get more power out of your sniper rifle today! FPS rating: 450-490 FPS
Disclaimer: Any and all airsoft upgrade parts purchased from Airsoft Megastore will be used/installed at owner's discretion. We are not responsible for any damage that may occur. For best results, please do all upgrades at a certified professional airsoft technician/shop.