Mk 208 HBSR

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Mk 208 Heavy Barrel Service Rifle
Designated Marksman Rifle.png
The Mk 208 HSBR, chambered in 8.5 mm SRC (Service Rifle Cartdrige)
TypeBattle rifle, service rifle, marksman rifle
Place of originOderran Commonwealth
Service history
In service2948 - present
Used byOderran Confederation
WarsMilky Way Conflict
Specifications
Weight4.8 kilograms (11 lb)
Length99 centimetres (39 in)

Cartridge8.5 x 82 mm Service Rifle Cartridge
12.5 x 99 mm Heavy Duty Antimateriel Cartdrige
Cartridge weight12 grams (190 gr) for 8.5 mm SRC
40 grams (620 gr) for 12.5 mm HDAC
Caliber8.5 millimetres (0.33 in)
12.5 millimetres (0.49 in)
ActionElectromagnetic coil accelerator
Rate of fireTrigger pull rate capped at 1000 rounds per minute
Expected combat fire rate of 200 - 300 rounds per minute
Muzzle velocity1,282 metres per second (4,210 ft/s)
Effective firing rangeEffective range: 1,900 metres (2,100 yd)
Maximum range: 4,922 metres (5,383 yd)
Feed systemBullpup feed system with 10, 15 or 20 round box magazines
SightsMod 2 holographic sight projection, tritium infused iron sights

The Mk 208 Heavy Barrel Service Rifle is a Oderran designed, semi-automatic battle/marksman rifle that has been standard service rifle of the Confederate military since 2948. Regarded as one of the most effective coil accelerator firearms ever produced, it however suffered in performance against linear accelerator weaponry such as Concordium railguns and performed poorly against shielded targets, evident in the Great Intergalactic War.

Design

A female Confederate army trooper during the Battle of Nuvari holding her Mk 208.

The Mk 208 HBSR is a semi-automatic, coil accelerated battle rifle chambered in 8.5 mm x 82 mm SRC (Service Rifle Cartridge). The weapon is constructed from a primary titanium chassis that is reinforced with nanocarbon composite materials, making the rifle robust and resistant to battlefield wear and tear. The bolt is constructed out of pure titanium molybdenum alloy, making it highly resistant to corrosion and the barrel has been reinforced with tungsten carbide and chrome-lined to keep it from expanding too much when heated from the firing of rounds, which could affect accuracy. The barrel is also specially tuned to improve accuracy, netting a deviation of only 0.01 mm off target at 100 meters during tests. The rifle feeds via a bullpup magazine system, with either 10, 15 or 20 round magazines available for the Mk 208.

The rounds are fed into the chamber from the rear of the rifle and the magazine well utilises a magazine door system that prevents magazines from falling out of the weapon and foreign matter from entering the rifle. The magazines of the the Mk 208 are also of titanium construction and also feature a data connection to the rifle's integrated electronics suite, allowing it to display to the user how many rounds are left in the magazine.

Ammunition

The rifle is able to be chambered for two rounds: the 8.5 x 82 mm SRC or service rifle cartridge and the 12.5 x 99 mm HDAC or heavy duty antimaterial cartridge.