|  Celcius Technology CS450 Alpha Cylinder Unit for Systema PTW / CTW Series
- Muzzle Velocity with 0.20g BB : 470-480 FPS
- Spring type: M140
- Material: Stainless Steel, Aluminium
- Length: 165mm
- Outer Diameter: 25.45mm
Net Weight: 154.6g
Compatible with M4, M4 CQB, M16A2, M16A3 P.T.W. and C.T.W. Training Weapon
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