The Definition of Open Bolt
A type of firearm in which the action is in the open position and the chamber empty prior to firing.
When the trigger is pressed the bolt moves forward, chambering a cartridge and firing it and returning
to the open position. When firing is stopped the bolt remains open and the chamber empty.
19 Other Firearms Definitions You Need To Know
The top of the butt-end of a gun stock.
Co-Witness Sighting is the use of any iron sight mounted onto a rifle that is fitted with an optical sight as a primary sighting system.
They come in two basic configurations, fixed or flip-up. The idea is that if you align your red dot and your iron
sights you have a backup aiming system on the gun.
A shotgun shooting sport that combines elements of skeet and trap, and that is designed to simulate field conditions.
With the execption of the BP model series, Thunder is the name of all of Bersa's pistols.
The line currently consists of three frames.
• The Thunder .380 series, which is a very reliable and good looking compact blowback system .380 acp pistol (there is also a .22lr version).
• The full size Thunder Pro series (avalable in 9mm and .40 S&W) is a locked breech design.
• The Thunder Ultra Compact Pro series, locked breech, short recoil design which is more of a commander size Thunder Pro (available in 9mm, .40 S&W, and .45 acp).
The Bersa Thunders are well known among firearms enthusiasts for being extremely high quality guns at reasonable prices.
A cartridge in which the base diameter is the same as the body diameter. The casing will normally have an extraction groove machined around it near the base,
creating a "rim" at the base that is the same diameter as the body diameter.
To pull the trigger and release the hammer of a firearm without having a cartridge in the chamber.
The rear end of the barrel into which the cartridge is inserted
An armor-piercing shell must withstand the shock of punching through armor plating. Shells designed for this purpose
have a greatly strengthened case with a specially hardened and shaped nose,
and a much smaller bursting charge.
Any piece that projects from a firearm for the purpose of attaching something to it.
For example barrel lugs are used to attach a break-action shotgun barrel to the action itself.
If the firearm is a revolver, the term may also refer to a protrusion under the barrel that adds weight,
thereby stabilizing the gun during aiming, mitigating recoil, and reducing muzzle flip. A full lug extends all the way to the muzzle,
while a half lug extends only partially down the barrel. On a swing-out-cylinder revolver, the lug is slotted to accommodate the ejector rod.
A Moon Clip that hold enough rounds to load only a portion (usually half capacity) of a revolvers cylinder.
The amount of work done by a bullet, expressed in foot pounds.
Abbreviation for Cartridge Overall Length.
The Soviet Union's standard military and police side arm from 1951 to 1991 replacing the Tokarev TT-33 semi-automatic pistol and the Nagant M1895 revolver.
Designed by Nikolay Fyodorovich Makarov, it is a blowback operated semiautomatic pistol which fires the 9x18mm Makarov cartridge, and holds 8 rounds in the magazine.
A method of building a pair of barrels where the entire breech end of both barrels and the lumps together are machined
from one solid piece of steel. The barrel tubes are then fitted separately into this monoblock and the ribs attached.
Often identifiable by a distinctive ring around the barrels about three inches in front of the breech end.
The favored jointing method of the Beretta company. An incorrect euphemism for sleeved barrels.
Slang for eye protection. Referes to either goggles or safety glasses
A large piece of curved metal at the top of the grip on a pistol which protects the user's hand from getting "bitten" by the hammer or slide.
It is nearly always the top part of the grip safety commonly found on many 1911-style pistols.
Not really a gun at all. During the U.S. Civil War,
both sides would take tree branches or tree trunks, paint them black, and position them so that they appeared to be rifles or artillery pieces.
By doing so, they could fool the other side into believing that they had more artillery than they really did.
Any piece of clothing that covers the holstered gun. When the gun is worn on the belt, the most common types of cover garments are vests, sweaters, and jackets.
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