Description
The New Designz G3, Spec-R, G4 Performance Backcap allows for reduced input pressure, dwell settings, quieter operation, and overall better performance.
Features:
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Improved efficiency — higher shot count and shot to shot consistency
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Reduced internal friction
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Ramped exhaust ports — better air flow
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Spiral/ vortex milling
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Tuned porting
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Adds 10-15+fps over stock bolt guide
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NO tools needed
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Includes all o-rings and installed bumper
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