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Close Quarters Battle Receiver
The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 Carbine, developed by the US Navy. The CQBR features a 10.3 in (262 mm) length barrel (similar to the Colt Commando short-barreled M16 variants of the past) which makes the weapon significantly more compact, thus making it easier to use in, and around, vehicles and in tight, confined spaces. The overall length of the upper receiver is 19.25 inches (489 mm). With the stock retracted, the overall length of the weapon is 26.75 inches (679.4 mm). Those created as complete rifles (rather than only upper receivers) are type designated as MK 18 MOD 0/1. Special forces units utilize the CQBR for scenarios such as VIP protection, urban warfare, and other close quarters battle (CQB) situations. Its former preliminary National Stock Number (NSN) had been 1005-LL-L99-5996. A complete CQBR-equipped carbine now has the NSN 1005-01-527-2288. Background The M4 carbine and M16 are not ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Close Quarters Battle
Close-quarters combat (CQC) or close-quarters battle (CQB) is a tactical situation that involves a physical fight with firearms involved between multiple combatants at short range. It can occur between military units, police/corrections officers and criminal elements, and in other similar situations. In warfare, it usually consists of units or teams of varying size engaging the target or attacking personnel with personal weapons within a distance of up to 100 meters (110 yards), from proximity hand-to-hand combat to close-quarter target negotiation with usually automatic weapons. In the typical close combat scenario, the attackers try a very fast, violent takeover of a vehicle or structure controlled by the defenders, who usually have no easy method to withdraw. Because attacking and defending personnel, hostages/civilians, and friendly personnel can be closely intermingled, close-quarters combat demands a rapid assault and a precise implementation of lethal force. The operators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Law Enforcement Detachments
Law Enforcement Detachments or LEDETs are specialized, deployable maritime law enforcement teams of the United States Coast Guard. First established in 1982, their primary mission is to deploy aboard U.S. and allied naval vessels to conduct and support maritime law enforcement, interdiction, or security operations. LEDETs are the operational elements of the Coast Guard’s two Tactical Law Enforcement Teams (TACLETs) which were part of the Coast Guard’s Deployable Operations Group (DOG) from 2007 to 2013. As of April 2010 there are seventeen LEDETs. History The Coast Guard officially established the Law Enforcement Detachment program in 1982. The first LEDETs operated directly under Coast Guard groups and districts, where they served as law enforcement specialists, conducting training and local operations. In 1986, Public Law (P.L.) 99-570 specifically authorized the establishment of billets for active duty Coast Guard personnel to carry out drug interdiction operations from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, multi-mission service unique among the United States military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. It is the largest and most powerful coast guard in the world, rivaling the capabilities and size of most navies. The U.S. Coast Guard is a humanitarian and security service. It protects the United States' borders and economic and security interests abroad; and defends its sovereignty by safeguarding sea lines of communication and commerce across vast territorial waters spanning 95,000 miles of coastline and its Exclusive Economic Zone. With national and economic security depending upon open global trade a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Criminal Investigative Service
The United States Naval Criminal Investigative Service (NCIS) is the primary law enforcement agency of the U.S. Department of the Navy. Its primary function is to investigate criminal activities involving the Navy and Marine Corps, though its broad mandate includes national security, counterintelligence, counterterrorism, cyberwarfare, and the protection of U.S. naval assets worldwide. NCIS is the successor organization to the former Naval Investigative Service (NIS), which was established by the Office of Naval Intelligence after the Second World War. One half of NCIS personnel are civilian, with the other half being special agents. NCIS agents are armed federal law enforcement investigators, who frequently coordinate with other U.S. government agencies and have a presence in more than 41 countries and on U.S. Navy vessels. NCIS special agents are supported by analysts and other experts skilled in disciplines such as forensics, surveillance, surveillance countermeasures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visit, Board, Search, And Seizure
Visit, board, search, and seizure (VBSS) is the term used by United States military and law enforcement agencies for maritime boarding actions and tactics. VBSS teams are designed to capture enemy vessels, combat terrorism, piracy, and smuggling, and to conduct customs, safety and other inspections. United States Navy training The initial training continuum includes three courses, lasting a total of eight weeks (SRF-B, SRF-A, VBSS), with some team members receiving additional follow-on training. Skills taught in VBSS training revolve around Close Quarters Battle (CQB). Training consists of proficiency in hand-to-hand combat tactics, search procedures, tactical team movements, shooting, rappelling, searching, and arrest procedures for compliant and non-compliant combatants. This aspect of the Navy plays a role in maintaining security and freedom of sea lanes worldwide. Some advanced units, known as Helicopter Visit, Board, Search, and Seizure (HVBSS) teams, have been trained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AR-15
An AR-15-style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design. The original ArmaLite AR-15 is a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design. The then Fairchild Engine and Airplane Corporation division ArmaLite sold the patent and trademarks to Colt's Manufacturing Company in 1959. After most of Colt's patents for the Colt AR-15 expired in 1977, many firearm manufacturers began to produce copies of the Colt AR-15 under various names. While the patents are expired, Colt retained the trademark of the AR-15 and is the sole manufacturer able to label their firearms as ''AR-15''. The "AR" in Colt AR-15 stands for "ArmaLite Rifle", not " assault rifle". The Federal Assault Weapons Ban restricted the sale of the Colt AR-15 and some derivatives in the United States from 1994 to 2004, although it did not affect rifles with fewer listed features. After the term modern sporting rifles was coined in 2009 by the US National Shooting Sports F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate Cartridge
An intermediate cartridge is a rifle/carbine cartridge that has significantly greater power than a pistol cartridge but still has a reduced muzzle energy compared to fully powered cartridges (such as the .303 British, 7.62×54mmR, 7.92×57mm Mauser, 7.7×58mm Arisaka, .30-06 Springfield, or 7.62×51mm NATO), and therefore is regarded as being "intermediate" between traditional rifle and handgun calibers. As their recoil is significantly reduced compared to full-power cartridges, fully automatic rifles firing intermediate cartridges are relatively easy to control. However, even though they are less powerful than a traditional full-power cartridge, the external ballistics are still sufficient for an effective range of , which covers most typical infantry engagement situations in modern warfare. This allowed for the development of the assault rifle, a type of versatile selective fire small arms that is lighter and more compact than traditional battle rifles that fire full-po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submachine Gun
A submachine gun (SMG) is a magazine-fed, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an automatic firearm with notably less firepower than a machine gun (hence the prefix " sub-"). As a machine gun must fire rifle cartridges to be classified as such, submachine guns are not considered machine guns. The submachine gun was developed during World War I (1914–1918) as a close quarter offensive weapon, mainly for trench raiding. At its peak during World War II (1939–1945), millions of SMGs were made for use by regular troops, clandestine commandos and partisans alike. After the war, new SMG designs appeared frequently.Military Small Arms Of The 20th Century. Ian Hogg & John Weeks. Krause Publications. 2000. p93 However, by the 1980s, SMG usage decreased. Today, submachine guns have been largely replaced by assault rifles, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Surface Warfare Center Crane Division
Naval Surface Warfare Center Crane Division (NSWC Crane Division) is the principal tenant command located at Naval Support Activity Crane (NSA Crane). NSA Crane is a United States Navy installation located approximately southwest of Bloomington, Indiana, and predominantly located in Martin County, but small parts also extend into Greene and Lawrence counties. It was originally established in 1941 under the Bureau of Ordnance as the Naval Ammunition Depot for the production, testing, and storage of ordnance under the first supplemental Defense Appropriation Act. The base is named after William M. Crane. The base is the third largest naval installation in the world by geographic area and employs approximately 3,300 people. The closest community is the small town of Crane, which lies adjacent to the northwest corner of the facility. Operations With an increasing demand in the 1990s and 2000s by the US military for bases to support multiple functions rather than being sole-purp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mk 12 Special Purpose Rifle
The United States Navy Mk 12 MOD 0/1/H Special Purpose Rifle (SPR) is a designated marksman rifle that was in service with United States Special Operations Forces in the designated marksman role until 2017, also designed to be shorter than standard weapons. SPR initially stood for ''Special Purpose Receiver'' as it referred to an add-on upper receiver assembly (part of the proposed SOPMOD upgrades), but that nomenclature changed to ''Special Purpose Rifle'' as the weapon became a stand-alone weapons system. The SPR was eventually type-classified by the U.S. Navy as the Mk 12. The weapon was developed by the Naval Surface Warfare Center Crane Division for US special operations units, not for Navy units in general. History The SPR, used by Special Operations Forces of both the U.S. Army and U.S. Navy, is a heavily modified light designated marksman variation of the M16 line of infantry weapons, chambered for NATO standard 5.56×45mm ammunition.The rifle is designed to fire semi- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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