These cartridges will fire a projectile containing a combination payload of a Flash-Bang charge and a smoke charge. The Flash-Bang charge is contained in a rubber section of the projectile. It is initiated approximately 4 seconds after launch. The smoke section is initiated approximately 1.5 seconds after launch and provides smoke under pressure for approximately 25 seconds. The 37/40mm models can be launched from our TL-1 launcher as well as from all current 1.5 gas guns. The stepped rim at the cartridge base also allows them to be fired from the U.S. M203 40mm grenade launcher as well as from M79 type launchers such as our TGL-1. The true 40mm models are designed specifically for grenade launchers such as the M203, M79 and our TGL-1. These rounds will not chamber in 1.5 Gas Guns. Both calibers are available with CS irritant Smoke, CN irritant Smoke or White Smoke sections as a standard. Colored smoke sections are also available upon special order. SPECIFICATIONS: 37/40mm Models: Weight-196gm(6.9oz), Overall Lenght-4.8"(122mm), Effective Range-150yds 40mm Models: Weight-235gm(8.3oz), Overall Length-4.8"(122mm), Effective Range-150 yds (137m)