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300 AAC Blackout
The .300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. or 300 AAC Blackout'' C.I.P. TDCC sheet 300 ACC Blackout/ref>), also known as 7.62×35mm, is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. The cartridge yields increased performance in shorter barrels and effective subsonic performance for suppressor use when compared to 5.56mm NATO. The 300 AAC Blackout utilizes standard 5.56mm NATO magazines and components with the exception of the barrel. History While 5.56×45mm NATO has enjoyed widespread acceptance in military circles, the nature of the missions encountered by some special operations groups often demand a round that provides better performance than that available in the high-energy, standard velocity rounds, and subsonic performance greater than standard 9×19mm Parabellum (the ubiquitous pistol and submachine gun) round. To meet this demand, AAC de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plastic-tipped Bullet
A plastic-tipped bullet is a type of hollow-point bullet tipped with a nose cone made of synthetic polymer to give it a pointed spitzer-like shape. Design and use The bullets consist of a fairly normal hollow-point bullet with the frontal cavity filled in by hard plastic, which is molded into a streamlined shape. Most tips are made of polyoxymethylene, although some manufacturers have used polyester urethane- methylenebis(phenylisocyanate) copolymer. Upon impact, the plastic drives into the hollow point and the bullet performs like a standard hollow-point, expanding ("mushrooming") to a larger diameter. These bullets possess the aerodynamics for longer, more accurate flights, and the in-target performance to ensure high lethality. Traditionally, these bullets are intended for use in rifles and single-shot handguns, as pistols are not normally used at the great distances where the streamlined ballistic tip is advantageous. However, a few companies produce pistol ammunit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Practical Shooting Association
The United States Practical Shooting Association (USPSA) is the national governing body of practical shooting in the United States under the International Practical Shooting Confederation (IPSC). Its over 35,000 active members and over 500 affiliated clubs make USPSA the largest practical shooting organization in the United States and the second largest region within IPSC after the Russian Federation of Practical Shooting. USPSA publishes a monthly member magazine called ''Front Sight''. History IPSC was formed in 1976 at a meeting in Columbia, Missouri, led by the late Jeff Cooper. It was here that the sport of Practical Shooting was formally established after years of independent efforts around the country to build upon the handgun skills and training for self-defense. The early days of the sport can be traced back to the 1950s and the quick draw "leather slap" competitions that grew out of America's love affair with the TV westerns of that era. In 1984 USPSA was incorporated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Task & Purpose
''Task & Purpose'' is an American online publication founded in 2014 which covers the United States Armed Forces and the defense industry. They serve millions of readers monthly. History ''Task & Purpose'' was founded in 2014 by Zachary Iscol, Brian Jones, and Lauren Katzenberg. The company grew out of the job board HirePurpose and its content originally had a focus on helping soldiers transition back to civilian life. In 2018 managing editor Adam Weinstein resigned after CEO Zachary Iscol requested that he change the title of a ProPublica investigation into undue influence over the Department of Veterans Affairs featured on the site. Weinstein contended that Iscol strongly disagreed with both the title and the factual accuracy of the reporting done by ProPublica which Weinstein felt was undue influence on the publication's editorial independence. Weinstein also said that this was not the first time that management, specifically Iscol, had interfered in the editorial process i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sig Sauer
Several brother companies that design and manufacture firearms use the brand name SIG Sauer . The original company, ''Schweizerische Waggon-Fabrik'' (SWF), later ''Schweizerische Industrie-Gesellschaft'' (SIG), went through several selloffs, leaving the SIG Sauer brand spread over several companies. The original SIG is now known as SIG Combibloc Group and no longer has any firearms business. * The German company was SIG Sauer GmbH & Co. KG. It was formed in 1976 as a partnership between Schweizerische Industrie Gesellschaft (SIG) of Switzerland and J.P. Sauer & Sohn of Germany. * The Swiss company is SIG Sauer AG. Its predecessor SIG Arms AG was sold to L&O Holding in western Germany and was first renamed SAN Swiss Arms AG, commonly known as Swiss Arms, and in late 2019 was further renamed SIG Sauer AG. * The American company is SIG Sauer, Inc. Its predecessor SIGARMS was founded in Virginia in 1985 to import and distribute SIG Sauer firearms into the United States: Its head ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Special Operations Command
The United States Special Operations Command (USSOCOM or SOCOM) is the unified combatant command charged with overseeing the various special operations component commands of the Army, Marine Corps, Navy, and Air Force of the United States Armed Forces. The command is part of the Department of Defense and is the only unified combatant command created by an Act of Congress. USSOCOM is headquartered at MacDill Air Force Base in Tampa, Florida. The idea of an American unified special operations command had its origins in the aftermath of Operation Eagle Claw, the disastrous attempted rescue of hostages at the American embassy in Iran in 1980. The ensuing investigation, chaired by Admiral James L. Holloway III, the retired Chief of Naval Operations, cited lack of command and control and inter-service coordination as significant factors in the failure of the mission. Since its activation on 16 April 1987, U.S. Special Operations Command has participated in many operations, fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenders Electronic Daily
Government procurement or public procurement is undertaken by the public authorities of the European Union (EU) and its member states in order to award contracts for public works and for the purchase of goods and services in accordance with principles derived from the Treaties of the European Union. Such procurement represents 14% of EU GDP ,European CommissionCommunication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions: Making Public Procurement work in and for Europe COM(2017) 572 final, published 3 October 2017, accessed 20 October 2021 and has been the subject of increasing European regulation since the 1970s because of its importance to the European single market. According to a 2011 study prepared for the European Commission by PwC, London Economics and Ecorys, the UK, France, Spain, Germany, Poland and Italy were together responsible for about 75% of all public procurement in the EU ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (United Kingdom)
The Ministry of Defence (MOD or MoD) is the department responsible for implementing the defence policy set by His Majesty's Government, and is the headquarters of the British Armed Forces. The MOD states that its principal objectives are to defend the United Kingdom of Great Britain and Northern Ireland and its interests and to strengthen international peace and stability. The MOD also manages day-to-day running of the armed forces, contingency planning and defence procurement. The expenditure, administration and policy of the MOD are scrutinised by the Defence Select Committee, except for Defence Intelligence which instead falls under the Intelligence and Security Committee of Parliament. History During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdom: t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jane's Defence Weekly
''Jane's Defence Weekly'' (abbreviated as ''JDW'') is a weekly magazine reporting on military and corporate affairs, edited by Peter Felstead. It is one of a number of military-related publications named after John F. T. Jane, an Englishman who first published '' Jane's All the World's Fighting Ships'' in 1898. It is a unit of Jane's Information Group, which was purchased by IHS in 2007. The magazine has a large circulation and is frequently cited in publications worldwide. History ''Jane's Defence Weekly'' was established in 1984 replacing the now-defunct ''Jane's Defence Review''. The latter was started in 1978 and was published on a monthly basis. Samuel Loring Morison In 1984, only months after the magazine was established, ''Jane's Defence Weekly'' gained worldwide attention after printing several images from an American spy satellite of the Nikolaiev 444 shipyard in the Black Sea, showing a Kiev-class aircraft carrier under construction.https://news.google.com/newspapers? ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SIG MCX
The SIG MCX is a family of firearms designed and manufactured by SIG Sauer, produced in both selective fire and semi-automatic only models, and features a short-stroke gas piston system, which is inherited from the earlier SIG MPX submachine gun. The MCX is available in rifle, carbine, short-barreled rifle, and pistol configurations (the latter configuration generally conforming to the definition of a compact carbine but for taking a pistol brace rather than a buttstock). The rifle was further developed into the SIG MCX Spear, which was adopted in its .277 Fury chambering as the XM5 by the U.S. Army in 2022. History The SIG MCX was first introduced at SHOT Show 2015. The rifle was originally designed by SIG USA, the subsidiary of SIG Sauer based in New Hampshire. In 2016, SIG recalled some of the rifles that had the first-generation bolt carrier group. A SIG MCX was used in the 2016 Orlando nightclub shooting, which at the time was the deadliest mass shooting in U.S. histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frangibility
A material is said to be frangible if through deformation it tends to break up into fragments, rather than deforming elastically and retaining its cohesion as a single object. Common crackers are examples of frangible materials, while fresh bread, which deforms plastically, is ''not'' frangible. A structure is frangible if it breaks, distorts, or yields on impact so as to present a minimum hazard. A frangible structure is usually designed to be frangible and to be of minimum mass. Light poles A frangible light pole base is designed to break away when a vehicle strikes it. This lessens the risk of injury to occupants of the vehicle. Frangible supports are also used for airport approach structures. Bullets A frangible bullet is one that is designed to disintegrate into tiny particles upon impact to minimize their penetration for reasons of range safety, to limit environmental impact, or to limit the danger behind the intended target. Examples are the Glaser Safety Slug and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsonic Ammunition
Subsonic ammunition is ammunition designed to operate at velocities below the speed of sound, which at standard conditions is or Mach 1. This avoids the supersonic shockwave or "crack" of a supersonic bullet, which, particularly for suppressed firearms, influences the loudness of the shot. Subsonic ammunition usually uses heavier bullets to retain as much energy as possible at the lower velocities. Some subsonic ammunition is used in non-suppressed firearms to gain the advantages of heavier bullet weights. __TOC__ Standard calibers Subsonic versions of standard rounds In this instance, heavier bullets are loaded in standard ammunition, which reduces muzzle velocity below the speed of sound. As an example, the very common 9×19mm Parabellum standard military round is a bullet at velocities typically around . Subsonic loads for 9mm commonly use bullets at velocities of . For these ammunition loads, balancing bullet weight and velocity are required to ensure that the ammun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball Ammunition
A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell ("jacket") of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy. A bullet jacket usually allows higher muzzle velocities than bare lead without depositing significant amounts of metal in the bore. It also prevents damage to bores from hard steel or armor-piercing core materials. History The bullet was invented in 1882 by Swiss Colonel Eduard Rubin while he was working for the Swiss Federal Ammunition Factory and Research Center, which developed ammunition for the Swiss military. The use of full metal jacketing in military ammunition came about in part because of the need for improved feeding characteristics in small arms that used internal mechanical manipulation of the cartridge in order to chamber rounds as opposed to externally hand-reloading single-shot firearms. The harder metal used in bullet jackets was less pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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