M75 CDTE

The M75 Counter Defilade Target Engagement System, colloquially known as the Punisher, is a semi-automatic infantry grenade launcher used by the UNSC Marines. It is manufactured by Heckler & Koch.
The weapon was in service prior to 2530, and was most notably used by Marine units stationed aboard the Spirit of Fire in 2531.
== Overview ==
The M75 CDTE is a semi-automatic, magazine-fed, bullpup grenade launcher that fires 25x40mm grenades from a detachable 8-round magazine. The launcher is equipped with am M208 target acquisition/fire control system module that comprises a variable magnification electronic optic with thermal and night vision capability, an IR laser rangefinder, environment sensors and a fuze setter for programmable munitions.
The M75 weighs approximately 4.5 kilograms when fully loaded and its electronic components are hardened against TREE and background radiation like the majority of UNSC weapons. It has proven to be effective when employed against unggoy squads and yanme'e swarms as a means of crowd control, with HEAB and thermobaric rounds able to disorientate and scatter, or completely incinterate tightly-packed groups with a single well-placed shot. When employed against the Flood, these rounds are effective at eliminating masses of infection forms. Direct-fire rounds, such as armor-piercing, fragmentation and buckshot, are effective against other Covenant forces as well as Flood combat forms and pure forms.