Upgraded C.P.S.B. For MSR-303 & SV98

FEATURES

• Sealed One-piece Cylinder
• Compatible with MSR-303 & SV98
• Compatible with AEG Spring
  
• Shorter than traditional bolt

Included:

• Stainless Steel Cylinder
• C.P.S.B. Stainless Cylinder Head 
• Stainless Steel spring guide
• Titanium& Aluminum Ultra-Light piston (CPSB-PT-003) 
• Upgraded spring