Techt G4/G3 Spec-R L7 Bolt Engine Factory Spare Parts The all new Delrin bolt

The all new Delrin bolt with a pull pin top cocking knob makes it easy to clean the breach of the marker in between games

Cell Size: AA

This product works best with VFC / Elite Force MP5 Magazines

Hop-up: Adjustable

- Full Stock Configuration

Techt G4/G3 Spec-R L7 Bolt Engine Factory Spare Parts The all new Delrin boltThe 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