The Derby Double Two Shooter, dog training equipment is ultra light die-cast aluminum (only 6lbs). It can shoot a bi-directional double or two bumpers in the same direction. The Derby Double can be linked and configured to any number of Bumper Boy dog training launchers, so you can set up the most difficult quad.

 It can be upgraded to a four shooter if you require more guns.

The Derby Double's complete package includes-

• Launcher
• Electronics
• Four unit battery charger
• 2 Bumper dummies

Additional unit package does not include a transmitter or battery charger because you can control and charge up to 4 different launchers with one remote transmitter and charger.