G-Force makes this Spitting Dragon Spitfire Tracer Unit for airsoft rifles, which sports a fire-spitting dragon motif. Like other tracer units, it makes specially-made BBs glow in the dark.
This unit has an M14 CCW (Negative) thread, though it also comes with an 11mm CW adapter. Any rifle that fires up to 35 RPS can work with the unit. Thanks to the devices rechargeable lithium-ion battery, it works for four hours of continuous use.

Features:

• Simulates muzzle flash and charges BBs with bright luminescent lighting
• Built-in motion sensor compatible with rifles shooting up to 35 RPS
• Low battery reminder feature alerts when charging is needed
• Easily switch between tracer and tracer with simulated muzzle flash modes
• High power UV LED technology for bright luminescent light on BBs
• Includes 11mm CW adapter for compatibility with most airsoft replicas
• Rechargeable design offers 4 hours of continuous use on one charge