"Full-auto ballistic firearm. Modest fire rate and magazine grip provide natural stability."
— In-game description
The weapon appears in Call of Duty: Infinite Warfare as the Trencher (referred to as MP28 in the game files). It was added to the game on the May 2nd, 2017 update and is only available from Supply drops, although bots sometimes wield it and will drop it upon death.
Like all of the other DLC weapons in the game, the Trencher can be unlocked through various different methods, such as completing the main challenge, obtaining a weapon variant of it from Supply Drops or having the Season Pass. The main challenge to unlock the Trencher is to complete a total of 20 matches where the player obtained ten kills using either the OSA, MacTav-45, TF-141, S-Ravage, M1 or Hornet.
The Trencher possesses a moderate fire rate and has low recoil thanks to its magazine grip.
On August 14th, 2017, a newsletter was released from the QR-M5TR, detailing the character's process of moving the Trencher from the QR-M5TR collection and into the Prototype Lab.
The letter reads as follows;
If you’re reading this, you’re already gone. I know you’re going to be great out there but that doesn’t make this any easier. You’ll go out into the world and do great things: provide accurate, suppressive fire, demonstrate diminished spray while the user is sliding and enrage noobs. As for me? I’ll stay here in my shop and try to not get too attached to other guns in my collection. I never can. You’re all just too special.
What I’ll remember about you the most is your spirit. Even from your earliest prototypes, you were a fighter. You never had the farthest sight, but that never mattered. You worked hard and, ultimately, your focus, your determination and your accuracy are the things that define you.
My favorite Instagram account once posted the following quote in front of a guy in a suit exiting a nice car “Greatness doesn’t see obstacles, only opportunities.” And, Trencher, that’s you to a T. In early testing, when you couldn’t hit water from the ocean, you simply turned your magazine box sideways. Now, that side-inserted magazine box defines you. Or when the assault rifles made fun of you for only dealing modest damage? You were inconsolable. You said, “I can’t help it! It’s how you made me! If only I could throw a grenade at those jerks!” And, look at you now, the only SMG with an available, under-mounted grenade launcher. One of a kind. That’s you, Trencher.
People say merely inputting specifications into a 3D printer and tapping ‘Print’ doesn’t make you an “actual parent” but those people? They’re wrong. I made you. And being a parent means knowing when to let go. So, Trencher, it’s time for me to say goodbye. You weren’t meant to sit around and collect dust. You belong out in the world. It makes me sad. But, I know you’re gonna do great. If I could cry, I’d be sobbing like a human baby. But, it’s good that I can’t because moisture ruins my internal processors.