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Feed Ramp
A feed ramp is a basic feature of many Breech-loading weapon, breech loading cartridge firearm designs. It is a tightly machined and polished piece of metal which guides a Cartridge (firearms), cartridge from the top of the Magazine (firearms), magazine into the firing Chamber (firearms), chamber of the Barrel (firearms), barrel. The feed ramp may be part of the magazine (AR-7), part of the receiver or frame (Mauser C96), part of the barrel (H&K USP) or part of the barrel nut/locking lugs (AR-15). Some firearms, like the FN Five-seven, have a beveled chamber instead of a feed ramp. The feed ramp is a critical part of semi-automatic firearms and automatic firearms. When the weapon is fired and the spent case is ejected, the feed ramp functions to direct a fresh cartridge from the magazine into firing position; that is, the fresh cartridge slides along the feed ramp into battery. The need for the cartridge to slide both forwards and upwards along the feed ramp and into the barrel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Dirty Barrel - CZ-75B 9mm
Dirt is any matter considered unclean, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include: * Debris: scattered pieces of waste or remains * Dust: a general powder of organic or mineral matter * Filth: foul matter such as excrement * Grime: a black, ingrained dust such as soot * Soil: the mix of clay, sand, and humus which lies on top of bedrock. The term 'soil' may be used to refer to unwanted substances or dirt that are deposited onto surfaces such as clothing. Etymology The word ''dirt'' first appears in Middle English and was probably borrowed from the Old Norse , meaning . Exhibitions and studies A season of artworks and exhibits on the theme of dirt was sponsored by the Wellcome Trust in 2011. The centrepiece was an exhibition at the Wellcome Collection showing pictures and histories of notable dirt such as the great dust heaps at Euston and King's Cross in the 19th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Gunsmiths
A gunsmith is a person who repairs, modifies, designs, or builds guns. The occupation differs from an armorer, who usually replaces only worn parts in standard firearms. Gunsmiths do modifications and changes to a firearm that may require a very high level of craftsmanship, requiring the skills of a top-level machinist, a very skilled woodworker, and even an engineer. Gunsmiths perform factory-level repairs and renovations to restore well-used or deteriorated firearms to new condition. They may make alterations to adapt sporting guns to better fit the individual shooter that may require extensive modifications to the firearm's stocks and metal parts. Repairs and redesigns may require fabrication and fitting of unavailable parts and assemblies constructed by smiths themselves. Gunsmiths may also renew metal finishes or apply decorative carvings or engravings to guns. Many gun shops offer gunsmithing service on the premises. Overview Gunsmiths may be employed in: * armories by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Firearm Malfunction
A firearm malfunction is the failure of a firearm to operate as intended for causes other than user error. Malfunctions range from temporary and relatively safe situations, such as a casing (ammunition), casing that did not eject, to potentially dangerous occurrences that may permanently damage the gun and cause injury or death. Improper handling of certain types of malfunctions can be very dangerous. Following gun safety rules can prevent firearm malfunctions, and limit the damage inflicted by them if they do occur. Proper cleaning and Firearm maintenance, maintenance of a firearm play a big role in preventing malfunctions. Cartridge malfunctions Case head separation Case head separation occurs when the walls of the casing become thin or fatigued. Upon firing the round, the case separates into two pieces near the head. It is not uncommon with brass that has been Handloading, reloaded several times. Dud A dud (also a misfire or failure to fire) occurs when the trigger is pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hollow Point Bullet
A hollow-point bullet is a type of expanding bullet which expands on impact with a soft target, transferring more or all of the projectile's energy into the target over a shorter distance. Hollow-point bullets are used for controlled penetration, where overpenetration could cause collateral damage (such as aboard an aircraft). In target shooting, they are used for greater accuracy due to the larger meplat. They are more accurate and predictable compared to pointed bullets which, despite having a higher ballistic coefficient (BC), are more sensitive to bullet harmonic characteristics and wind deflection. Plastic-tipped bullets are a type of (rifle) bullet meant to confer the aerodynamic advantage of the Spitzer bullet (for example, see very-low-drag bullet) and the stopping power of hollow-point bullets. Gunshot wounds from hollow-point bullets can be very painful; due to this, they have been banned from use in wartime. They may leave fragments difficult to remo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ogive
An ogive ( ) is the roundly tapered end of a two- or three-dimensional object. Ogive curves and surfaces are used in engineering, architecture, woodworking, and ballistics. Etymology The French Orientalist Georges Séraphin Colin gives as the term's origin the Arabic ''al-ġubb'' () 'cistern', pronounced ''al-ġibb'' () in vernacular Iberian Arabic, through the Spanish ''aljibe'' or archaically ''algibe.'' The earliest use of the word ''ogive'' is found in the 13th-century sketchbook of Villard de Honnecourt, from Picardy in northern France. The ''Oxford English Dictionary'' considers the French term's origin obscure; it might come from the Late Latin , the feminine perfect passive participle of , meaning the one who has met or encountered the other. However, Merriam-Webster's dictionary says it is from the "Middle English stone comprising an arch, from Middle French diagonal arch". According to Wiktionary, the French term comes "from Vulgar Latin augīvus, from Latin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Automatic Firearm
An automatic firearm or fully automatic firearm (to avoid confusion with semi-automatic firearms) is a self-loading firearm that continuously Chamber (firearms), chambers and fires Cartridge (firearms), rounds when the trigger (firearms), trigger mechanism is actuated. The action (firearms), action of an automatic firearm is capable of harvesting the excess energy released from a previous discharge to feed a new ammunition cartridge (firearms), round into the chamber (firearms), chamber, and then igniting the propellant and discharging the projectile (either bullet, shot (pellet), shot, or shotgun slug, slug) by delivering a hammer (firearms), hammer or firing pin, striker impact on the primer (firearms), primer. If ''both'' the feeding and ignition procedures are automatically cycled, the weapon will be considered "fully automatic" and will fire continuously as long as the trigger is kept depressed and the ammunition feeding (either from a magazine (firearms), magazine or a belt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Semi-automatic Firearm
A semi-automatic firearm, also called a self-loading or autoloading firearm ( fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism automatically loads a following round of cartridge into the chamber and prepares it for subsequent firing, but requires the shooter to manually actuate the trigger in order to discharge each shot. Typically, this involves the weapon's action utilizing the excess energy released during the preceding shot (in the form of recoil or high-pressure gas expanding within the bore) to unlock and move the bolt, extracting and ejecting the spent cartridge case from the chamber, re-cocking the firing mechanism, and loading a new cartridge into the firing chamber, all without input from the user. To fire again, however, the user must actively release the trigger, and allow it to "reset", before pulling the trigger again to fire off the next round. As a result, each trigger p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
H&K USP
The Heckler & Koch USP (''Universelle Selbstladepistole'' or "universal self-loading pistol") is a semi-automatic pistol developed in Germany by Heckler & Koch GmbH (H&K) as a replacement for the P7 series of handguns. History Design work on a new family of pistols commenced in September 1989, focused primarily on the United States commercial and law enforcement markets. USP prototypes participated in rigorous testing alongside H&K's entry in the Offensive Handgun Weapon System (OHWS) program requested by the U.S. Special Operations Command (USSOCOM), which would later result in the Mk 23 Mod 0. The USP prototypes were then refined in 1992, based on input from the OHWS trials, and the design was finalized in December of the same year. The USP was formally introduced in January 1993 with the USP40 model (the base version) chambered for the increasingly popular .40 S&W cartridge, followed soon by the USP9 (using the 9×19mm Parabellum cartridge), and in May 1995—the USP45 (cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ballistic Advantage AR Barrels
Ballistics may refer to: Science * Ballistics, the science that deals with the motion, behavior, and effects of projectiles ** Forensic ballistics, the science of analyzing firearm usage in crimes ** Internal ballistics, the study of the processes accelerating a projectile ** Transition ballistics, the study of the projectile's behavior when it leaves the barrel ** External ballistics, the study of the passage of the projectile through space or the air ** Terminal ballistics, the study of the interaction of a projectile with its target * Ballistic conduction, conduction of electricity with negligible charge scattering * Ballistic movement of muscles in an animal Combat * Ballistic missile, a missile that follows a sub-orbital flightpath * Ballistic knife, a specialized combat knife with a detachable, self-propelled blade * Ballistic shield, a shield meant to protect the user from bullets Arts and media Comics * Ballistic (Image Comics), a comic character of Top Cow Produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Mauser C96
The Mauser C96 (''Construktion 96'') is a semi-automatic pistol that was originally produced by German arms manufacturer Mauser from 1896 to 1937. Unlicensed copies of the gun were also manufactured in Spain and China in the first half of the 20th century. The distinctive characteristics of the C96 are the integral Magazine (firearms)#Function and types, box magazine in front of the trigger, the long Gun barrel, barrel, and detachable wooden Stock (firearms), shoulder stock, which gives it the stability of a short-barreled rifle and doubles as a Handgun holster, holster or carrying case, and a grip shaped like the handle of a broom. The grip earned the gun the nickname "broomhandle" in the English-speaking world, and in China the C96 was nicknamed the "box cannon" ( zh, c=盒子炮, p=hézipào) because of its rectangular internal magazine and because it could be holstered in its wooden box-like detachable stock.Wilson (2009), p. 100. With its long barrel and high-velocity cartr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
