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Features
- Our Tight Bore Barrel Extensions are Designed to Fit TX68, TC68, HDX 68, TB68, DEFENSOR 68C
- Material: Strong And Durable PETG -3D Printed Designed by Us.
- Increases The Power Up To +10 Joules (Single) and Up To +22 Joules when BOTH extensions are used combined (Power Is determinate by the The Power Source Type, Temperature and Ammo Used)
- MUST Be Used with Recommended size ammo 17.3mm / (0.681) MAX.
Package include: 2 x 4 Inches Custom 3D Printed Barrels





