The Miter launches high velocity saw blades, tearing apart anyone unfortunate enough to be in their path.
The Miter is a saw blade launcher which is used by GrineerEviscerators. The disc must be charged in order to deal maximum damage. However, weaker uncharged shots can be fired in rapid succession as well.
Although the Miter uses Sniper Ammo, a bug currently disallows the use of the Sniper Ammo Mutation mod and instead uses the Rifle Ammo Mutation mod, which strangely still functions properly.
Fully charged shots fired from the Miter do not have projectile width. Instead they behave like a bullet-sized projectile that bounces off the floor of the map. This means that often the player will see the saw blade visibly touch enemies, but not actually apply damage because the center of the blade didn't hit them. You'll be lucky to hit more than 2 or 3 infested with a single charged shot, even when they're packed together tightly.
Non-charged shots fired horizontally will hit weapon's own barrel and fizzle.