This method of aiming is not exactly difficult, but it can be slightly inconvenient. This arc requires the player to judge just how high to point the M-79 in order to hit a distant target. The disadvantages of the M-79 is its very low rate of fire and the way it tends to 'lob' grenades out for distant shots so that the trajectory of the launched grenade forms an arc in the air (due to gravity). The M-79 can take out vehicles from mid to long range, making it an ideal anti-vehicle weapon.
The M-79 has remained in service in many units worldwide in niche roles.It using 40x46mm grenade.
Because of its distinct sound, the M-79 has been given a number of nicknames, like 'thumper' or 'blooper'.
It first appeared during the Vietnam War. The Model 79 is a single-shot, shoulder-launched, break-action grenade launcher which fires 40mm grenades. Just like the IED, the M-79's ammo depends on the amount of Grenades you carry (which depends on the difficulty you are playing on). Being an explosive weapon, it can 'one-hit-destroy' a vehicle. It becomes available after completing the last Convoy mission in Act 1 or at the beginning of Act 2.