This 2-in-1 T238 Tracer Unit & Muzzle Flash will add that realistic effect to take your Blaster to the next level. Multi Colour effects fully interchangeable RGB. Featuring a full metal construction, USB rechargeable 4 hour lithium battery and a 14mm to 11mm CCW adapter so you can swap it between your favorite Gel Blaster Pistol or Rifle. Powerful LED’s activate glow gels and provide muzzle flash at up to 35 rounds per second. Forget about holding your glow gels up to the light and waiting for them to activate, just screw this on and you’re ready to go.