Mk 19 grenade launcher

The Mk 19 (or Mark 19) is a grenade machine gun capable of firing one grenade every second at a maximum range of 1,200 metres (3,900 ft). The Mk 19 fires 40mm grenades at a rate of 325-375 rounds per minute (rpm). It has a maximum effective range of 2,212 metres (7,257 ft). It was originally used by the U.S. Navy in Vietnam for river patrol boats. Later it was adopted and improved upon by the U.S. Army. It is a man portable crew-served weapon that can fire from a tripod mounted position. It also fires from a vehicle mounted position (this is the preferred method since the weapon alone weighs 75 pounds (34 kg)). The ammunition comes in 32 or 48 round ammunition boxes weighing 42 pounds (19 kg) and 60 pounds (27 kg).

Mk 19 grenade launcher
A Mk 19 40 mm grenade launcher mounted on an M3 tripod
Type	Automatic grenade launcher
Place of origin	United States
Service history
In service	1968–present
Used by	20 countries including:  Afghanistan  Argentina  Australia[1]  Bangladesh[2]  Brazil[3]  Canada  Croatia  Egypt[4]  Greece[5]  Iran[6]  Iraq  Ireland[7]  Israel[1][4]  Lebanon[8]  Malaysia[1]  Mexico[1]  Pakistan[9]  Poland[10]  Spain[1]  Sweden[1][11][12]  Taiwan[13]  Thailand  Turkey[14][15]  United States[1]