M55 SCAR

The M55 Superior Combat Assault Rifle, officially designated Rifle, Caliber 6.8mm, M55, is a standard service rifle of the UNSC Marine Corps.
== Overview ==
The M55 SCAR is an MA5-pattern assault rifle with an overall length of 80 centimeters. The majority of its components are manufactured from titanium and high durability polymer. The rifle features a Spz-kr type progressive trigger, and a manual safety switch located immediately above the hand grip.
The rifle is fed from standard magazines with a 45-round cartridge capacity using polymer-cased, high-pressure 6.8x43mm ammunition and has a 508mm barrel, giving it an effective range of 500 meters. It also features a built-in electronics suit that includes a standard smart-linked electronic targeting system, digital ammunition counter, and a magnetic compass for orientation. The rifle has a cyclic fire rate of 900 rounds per minute.