5 best gun

1. FN Five-seven

     The FN Five-seven, trademarked as the Five-seveN, is a semi-automatic pistol designed and manufactured by FN Herstal in Belgium. The pistol's name refers to its 5.7-mm (.224 in) bullet diameter, and the unusual capitalization style is intended to spell out the manufacturer's initials—FN.

    The Five-seven pistol was developed in conjunction with the FN P90 personal defense weapon and the 5.7×28mm cartridge. The P90 was introduced in 1990, and the Five-seven was introduced in 1998 as a pistol using the same 5.7×28mm ammunition. As a companion pistol to the P90, the Five-seven shares many of the same features: it is a lightweight polymer-based weapon with a large magazine capacity, ambidextrous controls, low recoil, and the ability to penetrate body armor when using certain cartridge types.

     Sales of the Five-seven were originally restricted by FN to military and law enforcement customers, but since 2004, the pistol has also been offered to civilian shooters for personal protection, target shooting, and similar uses. Although offered only with sporting ammunition, the Five-seven's introduction to civilian shooters was met with strong opposition from gun control organizations such as the Brady Campaign, and the pistol has been subject to ongoing controversy in the United States.

     The Five-seven is currently in service with military and police forces in over 40 countries throughout the world. In the United States, the Five-seven is in use with numerous law enforcement agencies, including the U.S. Secret Service. In the years since the pistol's introduction to the civilian market in the United States, it has also become increasingly popular with civilian shooters.

2. P3

      The ‘P3’, properly known as the Phased Plasma Pistol, is an extremely compact short-range pistol that fires a small charge of superheated helium.

    The helium gas retains both its shape and small volume via a residual magnetic field and PPP ‘bolts’ cause significant visible distortion as they travel through air. Upon impact with an object, the magnetic field is dissipated and the heat discharged making it extremely effective against un-armoured opponents but practically useless against modern armour with heat dissipation capabilities.

      The P3 is composed only of highly heat-resistant alloys and composites, due to the rapid and extreme heating and cooling that it must endure during regular use and combined with its high rate of fire, which drains its limited energy source rapidly, makes it a less than ideal military weapon.

     It is used widely by Police and Urban Pacification Units and is a favourite of almost all criminal gangs and undercover operatives where its compact size means it can easily be disguised under clothing.

       Even though P3s are expensive to produce they are the standard-issue military sidearm for all space-based law enforcement and security personnel. While a stray bullet from a normal weapon can puncture the hull of a spacecraft or space station, causing unintended decompression, a P3 bolt cannot penetrate bulkheads or shielding.

       They have a high TQ production cost but low TQ maintenance costs, they are also extremely reliable, have no ammunition storage issues, are easy to recharge and it is therefore of little surprise that they are almost universal in their distribution.

3. Heckler & KochP

SP

      The USP (Universale Selbstladepistole or "universal self-loading pistol") is a semi-automatic pistol developed in Germany by Heckler & Koch GmbH (H&K) of Oberndorf am Neckar as a replacement for the P7 series of handguns.

4. FN FNP-45

   The FN Herstal FNP pistol is a series of semi-automatic, polymer-framed pistols manufactured in Columbia, SC, by FNH USA, a division of Fabrique Nationale de Herstal. The pistol debuted in early 2006 and is chambered for the 9x19mm Parabellum, .40 S&W, .45 ACP, and .357 SIG cartridges.

       All variations of the pistol include ambidextrous decocking levers and a reversible magazine release, as well as an integrated tactical accessory rail. In addition, the FNP-45 offers an ambidextrous slide release.    

       According to FNH USA, the FNP line of pistols is the only polymer-framed autoloading pistol on the market (as of its introduction) with fully replaceable frame rails; this allows the pistol to be rebuilt after extensive firing, thereby extending service life. (Steyr M Series pistols also have this feature, and were released in 1999).

5. Glock 19

     The Glock Safe Action Pistol, colloquially known as the Glock is a series of semi-automatic pistols designed and produced by Glock Ges.m.b.H., located in Deutsch-Wagram, Austria. The company's founder, engineer Gaston Glock, had no experience with firearm design or manufacture at the time their first pistol, the Glock 17, was being prototyped. Glock did, however, have extensive experience in advanced synthetic polymers, knowledge of which was instrumental in the company's design of the first successful line of pistols with a polymer frame. Glock also introduced ferritic nitrocarburizing into the firearms industry as an anti-corrosion surface treatment for metal gun parts.

     Despite initial resistance from the market to accept a "plastic gun" due to durability and reliability concerns, Glock pistols have become the company's most profitable line of products, commanding 65% of the market share of handguns for United States law enforcement agencies as well as supplying numerous national armed forces and security agencies worldwide.