Guarder M150 Oil Temper Wire Spring for APS Series SIG556 The sound is loud and

The sound is loud and if you put your face against the gun for automatic fire

This is the same as on the real M4

- Color : Dark Earth

Power (Muzzle Velocity)    320 FPS (CO2 Gas Test @ 25¡ãC Room Temperature) / 315 FPS (Top Gas Test @ 25¡ãC Room Temperature)

Guarder M150 Oil Temper Wire Spring for APS Series SIG556 The sound is loud andFor Maruzen Airsoft Spring Gun Sniper APS & Type 96 Series Supreme Quality Airsoft Gun Spring Oil Quenched & Tempered Si Cr Alloy Steel Wire Type Spring offer stable performance Ready to power up 90% more of your Airsoft Sniper Power Output may vary if used in conjunction with our upgrade parts If this one is not suitable for you, please search our eBay for the one you need SKU G M150 Major Color Other Built Material Oil Quenched Tempered Si Cr Alloy