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The group also noted that 5.7×28mm firearms had existed for a longer period of time than 4.6×30mm firearms, and that the 5.7×28mm FN Five-seven pistol was already in production at that time, while the 4.6×30mm Heckler & Koch UCP pistol was a new concept. [12]
Following the P90's introduction, FN revised the 5.7×28mm ammunition. [12] The new variation, designated the SS190, used a projectile 2.7 mm (0.11 in) shorter in length than that of the SS90. [17] This allowed it to be used more conveniently in the 5.7×28mm FN Five-seven pistol, which was under development at that time. [12]
The Ruger-5.7 is a semi-automatic pistol introduced in December 2019 by Sturm, Ruger & Co. [3] It is the first traditionally-styled semi-automatic pistol to be chambered for the 5.7×28mm cartridge since the introduction of the Excel Arms MP-57 in 2012.
Weighing less and delivering higher velocities than the 9mm, the .22 TCM is also compared to calibers like the 7.62×25mm Tokarev and FN 5.7×28mm. These characteristics make it viable for lightweight and compact personal defense weapons (PDWs), such as AR-15-style pistols, akin to those conceptualized in the Colt MARS Program.
The group also pointed out that 5.7×28mm weapons are more mature than 4.6×30mm weapons, and the 5.7×28mm FN Five-seveN pistol was already in production at that time, while the 4.6×30mm Heckler & Koch UCP pistol was still only an early concept. [7]
Below is a list of rimfire cartridges (RF), ordered by caliber, small to large. Rimfire ammunition is a type of metallic cartridge whose primer is located within a hollow circumferential rim protruding from the base of its casing.
The CPW (Compact Personal Weapon) is a multi-caliber submachine gun developed by ST Kinetics as a PDW-class firearm. [2] The prototype is chambered in 9×19mm Parabellum, but the manufacturer assures that the weapon's modular design allows for a simple caliber conversion to either 5.7×28mm or 4.6×30mm.
The 5.7 Rock is a semi-automatic pistol developed, manufactured, and sold by Palmetto State Armory. [2] It is chambered for the FN 5.7×28mm cartridge and is characterized by its generally low recoil. It is a competitor to the Five-seven, the Ruger-57, the M&P 5.7 and the TİSAŞ PX-5.7. [4] [5]