The New Designz X7 Phenom Spitfire Bolt and Spring Combo offers you a lightweight bolt that is 62% lighter than your stock X7 Phenom bolt. The kit includes a hand picked custom spring that works perfectly with our new bolt.
- 62% lighter than stock, BIG decease in weight
- 8 port venturi face
- Adds 10+ fps increase in velocity
- Smooth face for hassle free operation
- Includes custom NDZ spring
- Better shot to shot consistency
- Improved accuracy
- Quieter operation
- Made in USA High Quality Products!