Weapon Name- HK Mp8
Round Type- 5.7mm x 28mm "Caseless"
Over-all length- 415 mm (16.3 in) stock collapsed/ 638 mm (25.1 in) stock extended
Barrel length- 180 mm (7.1 in)
Weight- 1.9 kg (4.19 lb)
Rate of Fire- 950 rounds/min
Feed Mechanism- Detachable Box Magazine
Round Capacity- 25, 50
Effective Range- 200 meters
Range- 1800 meters (400)
Accuracy- 2 MOA
Accessories- Picanty Rail
Quick switch firing mechanism- N/A
Scope/Sights- Picanty Rail
Muzzle Velocity- 715 m/s
Firing System- MP7
Miscellaneous/electronic information- Essentially an MP7 refitted to fire 5.7mm x 28mm rounds
Basic Information
The weapon is essentially an MP7 that fires caseless 5.7mm x 28mm rounds.
The weapon possess a similiar firing system to the MP7 and LSAT. The weapon is designed to use caseless rounds, that are over-all 3 grams, instead of 6 grams, theoretically allowing twice as many rounds to be carried for the same spring strength, and weight. Despite it's capacity to be used as a pistol, the weapon is quite large, although it is not the size of a full sized machine gun. Being slightly lighter weight, loaded, the weapon is approximately the same weight as an ordinary MP7. Being around 4 pounds, and capable of being held with one hand, the weapon fits somewhere between a pistol and large sub-machine gun.
The weapon uses a polygonal cobalt chrome "flow formed" 8 groove 1:9 (1 complete turn in 9 inches / 278.6mm) right hand turn barrel; the barrel is made of an alloy that contains more than 50 percent cobalt. The barrel is roughly 13% heavier than standard steel barrels, but is more erosion and corrosion-resistant and is designed to retain high strength during long-term exposure to high temperatures. Cobalt alloys are frequently used in the aerospace industry, such as the hot-gas section of turbine engines. A proof of concept M240 7.62mm x 51mm NATO barrel, in practice, had 24,000 rounds test-fired through it, causing it to reach temperatures of 1,100 degrees, without failure. A steel barrel would have failed under such treatment.
