The Definition of Range Finder
A device used to determine the range to a target. Many range finders work by bouncing a laser beam off the target or
nearby object and measuring the time for the reflection to arrive back at the instrument.
It is also possible to use various passive optical devices such as a mil-dot telescopic sight.
19 Other Firearms Definitions You Need To Know
One of the three major dismountable components of a break-open gun (the others being the barrel(s) and the action/buttstock)
which secures the barrels to the receiver, often houses the ejector mechanism, and for some, provides a handle for the one's secondary hand.
The measurement from one side of the bore to the other. In a rifled barrel this means measurement of the bore before the rifling grooves are cut.
A passage built into a firearm to allow the safe conduct of unexpected gas, as from a pierced primer, to minimize damage both to the gun and to the shooter.
The mechanical sighting system which usually comes with the firearm made of metal with no optics.
An extra-deep magazine typical of large calibre rifles for dangerous game. The line of the underside of the wrist does not carry straight forward as with ordinary rifles.
Rather the rear of the magazine aligns more towards the center of the forward edge of the triggerguard,
typically allowing at least one extra cartridge to be carried.
A military person designated as a special marksman who is used to shoot designated targets of opportunity at long range.
A soft appendage, usually of some kind of rubber, often fitted to the butt end of a shoulder-mounted firearm to reduce the sensation of recoil.
A recoil pad has the additional benefit of being less vulnerable to damage than a checkered wood butt or a brittle horn or plastic buttplate.
A type rimfire rifle cartridge developed by the ammunition company Hornady.
.17 Hornady Magnum Rimfire (4.5×27mmR), commonly known as the .17 HMR, was developed in 2002.
It descended from the .22 Magnum by necking down the .22 Magnum case to take a .17 caliber (4.5 mm) bullet.
Abbreviation for Long Rifle. Typically used in the .22 caliber cartridge designation .22LR. However can be used as an abbreviation for Kentucky Long Rifle
The National Rifle Association. This organization coordinates shooting events on a national level, provides firearms training to civilians and law enforcement,
fights restrictive firearms legislation and supports the constitutional right of law abiding citizens to own and carry firearms.
Although a misused term (even within the firearms industry), Long Colt is a designation for an ammunition cartrige developed by Colt mainly used for revolvers. The actual designation is Colt instead of Long Colt.
The term Long Colt was originally coined to avoid confusion between the .45 Colt and .45 ACP cartridges
Abbreviation for Close Quarters Combat.
Firearms which are of special interest to collectors by reason of some quality
other than is associated with firearms intended for sporting use or as offensive or
defensive weapons. To be recognized as curios or relics, firearms must fall within one of
the following categories:
A special Curios or Relics license is available from the BATF, which allows collectors to buy eligible firearms in interstate commerce.
- Firearms which were manufactured at least 50 years prior to the current date, but not
including replicas thereof;
- Firearms which are certified by the curator of a municipal, State, or Federal museum
which exhibits firearms to be curios or relics of museum interest; and
- Any other firearms which derive a substantial part of their monetary value from the fact
that they are novel, rare, bizarre, or because of their association with some historical
figure, period, or event. Proof of qualification of a particular firearm under this
category may be established by evidence of present value and evidence that like firearms
are not available except as collector's items, or that the value of like firearms
available in ordinary channels is substantially less.
The firing mechanism of a break-open gun which may be removed for inspection or cleaning without the use of tools.
The release latch may be plainly visible or concealed. A feature typically seen on sidelock guns but also on the Westley Richards "droplock" boxlock action.
A piece of tooling used to form a sequence of uniform parts through the use of heat and/or pressure; especially, in firearms terminology used to form brass cartridge cases accurately to their correct size for reloading.
Covered compartment in the buttstock of a rifle used to carry patches or other small items.
A cable with a padlock at the end. It is threaded through the action of the firearm rendering the gun safe and useless until the lock is removed.
The condition of a cartridge not firing when an attempt to fire it is made.
It can be caused by either a defective cartridge or a defective firearm.
The term is frequently misused to indicate a Negligent Discharge of a firearm.
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