Weapon Name- Mk. Mp 42
Round Type- 9x19mm- 8 grams, .45 ACP- 15 grams
Over-all length- 833 mm (32.8 in) stock extended / 630 mm (24.8 in) stock folded
Barrel length- 203.2 mm (8 in)
Weight- 3.6 kg (8 lb), 9-10 lb loaded 32 rounds, 12-13.5 lb loaded 100 rounds
Rate of Fire- 650 RPM
Feed Mechanism- Detachable Box Magazine
Round Capacity- 32 rounds, 100 Beta-C drum magazine
Effective Range- 50 meters .45 acp, 100 meters 9mmx19mm
Range- 100 meters .45 acp, 150 meters 9mmx19mm
Accuracy- 4 MOA
Accessories- Picatny Rail, none
Quick switch firing mechanism- N/A
Scope/Sights- Picanty Rail, Iron sights
Muzzle Velocity- 366 m/s 9mm, 280 m/s .45 acp
Firing System- The M-10 has a telescoping short action bolt, which wraps around the barrel.
Miscellaneous/electronic information- Essentially a MAC-10 refitted in a format of an MP40, to give it a larger frame and increased controllability while firing.
Basic Information
The weapon superficially resembles an MP40 of the German WWII era. However, it's internal mechanisms are pretty much exactly the same as the MAC-10. It fires the same rounds, has the same firing mechanism, and is roughly the same size as the MAC-10's firing system. While the MAC-10 is ironically intended for a much smaller platform, the MP40 design incorporates and elongated stock, upper receiver, and over-all weapon length. This is becuase the weapon itself intends to reduce the recoil usually present from an extremely high rate of fire and smaller platform. While the firing mechanism is relatively small for such a large frame, the weapon intends to provide an enormous amount of recoil support, making the weapon fully capable of firing with "one hand" or without the stock extended.
The Mp 40 was built predominantly from steel stampings. A notched cocking handle protrudes from the top of the receiver, and by turning the handle 90° would lock the bolt, and act as an indicator that the weapon is unable to fire. The Mk. Mp 42 has a telescoping bolt, which wraps around the barrel. This allows a more compact weapon, and balances the weight of the weapon over the pistol grip where the magazine is located. The weapon fires from an open bolt, and in addition, the light weight of the bolt results in a rapid rate of fire. The barrel is threaded to accept a suppressor, which worked by reducing the discharge's sound, without attempting to reduce the velocity of the bullet. At the suggestion of the United States Army, Ingram added a small bracket with a small strap beneath the muzzle to aid in controlling recoil during fully-automatic fire. The weapon is of course, fully compatible with the MAC-10 silencer.
The weapon, somewhat larger than the MAC-10, incorporates recoil reducing material in both the stock and pistol grip to make the weapon much more controllable under automatic fire. The weapon is both much heavier, reducing the recoil, and has the firing mechanism further away from the shoulder, reducing the recoil. It as well has two thick rubber grips on both the "stockless" part and surrounding the pistol grip. Inside the gun, behind the firing mechanism, with the recoil reducers separated from the firing mechanism by a 2mm thick piece of sheet metal, are 4 4 inch recoil reducing tubes. They are essentially 4 pieces of precisely cut 1/2 inch diameter PVC pipe with two small end caps filled with motor oil, and correctly placed 1mm steel stamped sheet metal to hold the motor oil in. In between each end cap, are single 1/2 wide 6 inch springs, made of standard spring steel, coiled up to 4 inches at most instances. Inside the recoil reducers, is lead shot, intended to balance out the gun. The lead shot reduces the felt recoil by stabilizing the weapon, and allows the user to hold the weapon purely by the pistol grip without problems due to balance. The weapon also has a very reduced felt recoil, due to the 4 recoil reducers present within the end of the gun, and one present within the pistol grip.
