The twist cap is a safety feature which stops accidental fusing. The Mark 5-M5 Thunder flash is a must for any airsofter or Milsim player who needs pyrotechnics. The TLSFx flash bangs, give a very loud bang and a flash hence the name flash bangs. These were first made popular by the S.A.S. Easy to operate with turn and strike ignition method with a 7 second fuse. After that time the thunder flash bangs with a very bright flash.
Discounts for bulk buys.