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Marine Corps by 1965
In TechT's testing they found that changing to a different spring (lighter spring) caused issues with the cyclone feed loading correctly
The Virtue Ion board easily installs in minutes
The TechT MRT Phenom Bolt utilizes the stock spring
Techt G4/G3 Spec-R L7 Bolt Engine Airsoft Gun Parts & Upgrades Marine Corps by 1965The TechT G3 Spec R G4 L7 Bolt Engine totally reconfigures the Stock G3 Spec R G4's method of operation. By replacing the stock style bolt with the proven L7 style bolt head, performance is increased on every level. Lower operating pressure, shorter dwells, better consistency, better efficiency, lower sound signature the works. It is constructed of high grade aircraft aluminum and goes through our licensed anodizing method to make them both durable
