M32

Overview
The M32 Multiple Grenade Launcher, known as the M32 in-game, is a revolver-style grenade launcher designed to fire off several rounds in a short amount of time. The 40mm rounds are housed in a cylinder near the middle of the gun, and when the user pulls the trigger, a round is fired and the cylinder is rotated, making this gun a powerful semiautomatic grenade launcher.

Using

 * Conserve that ammunition! The gun spawns with only 18 rounds, which may seem like a lot, but this gun burns through ammunition fast.
 * Another technique to use is to fire the M32 like it is an M79. Instead of firing as many shots as possible, try and aim to maximize damage rather than relying on splash damage.
 * If you find a massive group of teamers, open fire. 6 grenades can do massive amounts of damage if you land them properly.
 * If you somehow manage to find the M32 in 50v50, use it to bombard the enemy airdrop or the bridge for massive amounts of damage and kills.

Against

 * Trick the user into wasting as much ammunition as possible
 * Try and get close to the user. At a certain point, they will be affected by splash damage as well, and will have to switch to their secondary.
 * Attack when they are reloading. The massive reload gives you an opportunity to strike while they cannot retaliate
 * Another method you can use is to combine the previous three strategies. After tricking the user into wasting a full cylinder, use the time they spend reloading to charge in and force them to use a different weapon.