You can get this smoke cap at £3.50 for 4 pieces at Landwarrior Airsoft, making this one of the most affordable smoke grenades available in the UK. You can get it even cheaper at £3.25 for 5 pieces or more. The smallest smoke available. Gives a 30 second burn time, enough time to move up a few team mates. Available to over 18's only. All airsoft pyrotechics are capable of producing heat and explosive forces. They must be handled with care and stored properly.