Weapon Name- P1 - PP2
Round Type- 9mm x 19mm
Over-all length- 8.8 inches, 13.4-21.9 inches
Barrel length- 5 inches, 7.2 inches
Weight- 1.8 pounds, 3.2 pounds
Rate of Fire- 540 RPM
Feed Mechanism- Detachable Box Magazine
Round Capacity- 18, 32
Effective Range- 25 meters
Range- 200 meters
Accuracy- 4 MOA
Accessories- Picatinny Rails
Quick switch firing mechanism- N/A
Scope/Sights- Picatinny Rails
Muzzle Velocity- 420 m/s (8.1 grams), 715 joules - 700 m/s (3.4 grams), 850 joules - 715 joules, 500 m/s (5.8 grams)
Firing System- Short recoil
Miscellaneous/electronic information-
Basic Information
The two firearms have similiar functions, fire the same round and utilize the same magazines, how fundamentally differ in their design. While the the P1 is a delayed blowback pistol at 1.8 pounds, the PP2 at 3.2 pounds uses a short stroke gas piston which allows it to have less recoil and a lower rate of fire, particularly by lightening the bolt, allowing it to serve as a fully automatic submachine gun with greater accuracy and control than the P1, at the expense of greater overall size. Both guns use a rotating locking bolt, and the P1 is similiar to the Desert eagle in this respect, with a construction similiar to the Israeli Jericho 941 pistol, but still relies on a delayed blowback design as in comparison to a gas operated system. The short stroke gas piston has a lighter bolt which requires less force in order to reciprocate, which allows it to be more accurate and have less recoil, at the expense of reliability. The delayed rotating bolt mechanism of the P1 also helps to reduce the mass required of the bolt of the blowback system to stay engaged while the round is firing, with a straight blowback design requiring a large amount of mass to keep the bolt closed when the round is firing before the pressure levels can drop to safe levels. By artificially delaying the time it takes for the bolt to move rearwards, the pressure is reduced without the need for an extremely heavy bolt to absorb the recoil forces, which reduces both felt recoil and the necessary size of the gun to handle the rearward recoil. The P1 is capable of fully automatic fire and using extended magazines designed for the PP2, however due to it's smaller size and greater recoil is much harder to control in automatic fire, combined with it's lack of a stock for absorbing recoil in to the shoulder. Both the PP2 and P1 can be carried easily on the hip, with the much larger PP2 being a hybrid between a pistol and submachine gun, like a micro UZI or MP7, and the P1 being a true dedicated pistol. As the ammunition is fairly lightweight, along with the firearms, it is easy to carry the guns as back-up weapons. The pistol rounds are unique in that can pierce armor at close range like many PDW's, and also use aluminum cases, which further reduce their weight. As they share ammunition and magazines, they are often carried together as a pair, both by police and military forces.
The aluminum case is based on the 9mm cartridge, but is 1.5 grams vs. 4.5 grams for a standard brass case. In addition, the bullet mass is reduced from 7.5 grams to 3.4 to 4.1 grams, while the propellant size stays the same, at around .75 grams; this results in a weight of approximately 6.35 grams vs. 12.5 grams for the 9mm, giving it half the weight of the previous cartridge. This greatly reduced weight allows twice as much ammunition to be carried, and puts the weight of the cartridge to similiar levels of the 5.7mm x 28mm and 4.6mm x 30mm of the P90 and MP7 respectively. As well, due to the hardened steel penetrator tip, the cartridge can penetrate through soft body armor, giving it slightly greater penetration than the 5.7mm and 4.6mm rounds given the greater mass and energy. The round is designed specifically to defeat level IIIA+ plates, typically designed to stop the 5.7mm and 4.6mm rounds, and can defeat standard level IIIA armor at 100 yards. The aluminum case is coated in polymer and a silicon lubricant, which is designed to reduce weapon fouling and galling that was present in previous aluminum rounds. It also uses a high strength low-cost aluminum alloy with 350 MPA, made with tempering techniques, that greatly increases it's strength without needing rare earth metals. These cases transfer less heat to the chamber walls and reduce aluminum powder build up in the guns, which previously lead to cook offs and dangerous fireballs in testing which precluded ordinary weapons from using aluminum cased cartridges.
