M6 handgun

The M6 pistol, formally called the Pistol, Caliber .45, M6, is a semi-automatic handgun issued to UNSC personnel as a standard sidearm. The M6 comes paired with a KFA-2 2x smart-link module (SLM) that is capable of interfacing with a soldier's helmet to project a graphical gunsight on their Heads-Up Display, allowing for rapid target acquisition at close range, as well as providing a "zoom" capability which increases effective accuracy at middle range.
== Overview ==
The M6 is a striker-fired, locked breech handgun that fires 15 rounds of .45 Parabellum ammunition from a double-stack box magazine. Various models of this weapon have been used by the UNSC Armed Forces for approximately 140 years, with the latest version, the M6A3, entering service in 2512.
The M6 features a polymer frame, tritium-illuminated iron sights and a match-grade progressive trigger, and is typically issued to enlisted personnel with a non-reflective black finish, while commissioned officers of certain ranks are issued pistols that sport an electroless nickel finish. The pistol is also issued with a smart-link module that is capable of interfacing with the user's helmet to project a graphical gunsight on their heads-up display.