Includes:

• CA APS 300% Spring
• First Factory APS Cylinder L2
• First Factory APS Piston & Piston head
• First Factory APS Taper Cylinder Head
• First Factory APS Spring Guide
• Guarder Reinforced Bolt Handle
• Professional Installation

*fps is based on an average, firing .25 bb's.  Your actual performance will vary depending factors like inner barrel quality, length, bb weight/quality and other factors.