Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Closed bolt

A semi or fully-automatic firearm which is said to fire from a closed bolt is one where, when ready to fire, a round is in the chamber and the bolt and working parts are forward. When the trigger is pulled the firing-pin or striker fires the round, the action is cycled by the energy of the shot sending the bolt to the rear which ejects the empty cartridge case, the bolt then goes forward feeding a fresh round from the magazine into the chamber, ready for the next shot.

1 Comparison with open bolt design

1.1 Pros

More accurate for the first round:
- No movement of working parts to inhibit accuracy.
- Round seats consistently in the chamber.
Action can be locked forward to further reduce noise in a suppressed weapon.

1.2 Cons

More complicated and expensive to manufacture.
Less heat dissipation from closed chamber.

2 Closed bolt weapons

3 Mixed mode weapons

FG42

4 See also

Open boltA semi or fully-automatic firearm which is said to fire from an open bolt is one where, when ready to fire, the bolt and working parts are held to the rear. When the trigger is pulled the bolt goes forward, feeding a round from the magazine into the chamb

Firearm actions

Read more »

<Hide>

Topics: Closed Bolt, Comparison With Open Bolt Design, Pros...

Closed (poker)In the game of poker, a betting round is said to be closed if no player will have the right to raise in the round. Normally this occurs when a player calls, and the next player whose turn it is to act is the one who made the last raise, so he cannot raise	Closed captioningClosed captioning allows deaf, hard of hearing / hearing-impaired, and other people to read, through captions, a transcript of the audio portion of a video that they cannot hear. As the video plays, captions showing what is being said and by who, as well	Closed-loop transfer functionIn telecommunication, a closed-loop transfer function is a mathematical expression ( algorithm) describing the net result of the effects of a closed ( feedback) loop on the input signal to the circuits enclosed by the loop. Notes 1 The closed-loop transfe
Closed waveguideIn telecommunication, a closed waveguide is an electromagnetic waveguide (a) that is tubular, usually with a circular or rectangular cross section, (b) that has electrically conducting walls, (c) that may be hollow or filled with a dielectric material, (d	Closed setIn topology and related branches of mathematics, a set is called closed if its complement is open. This implies that a closed set contains its own boundary. Intuitively, if you are outside the set, and you "wiggle" a little bit, you will still be outside	Closed-circuit televisionClosed-circuit television CCTV , as a collection surveillance cameras doing video surveillance is the use of television cameras for surveillance. It differs from broadcast television in that all components are directly linked via cables or other direct me
Closed-End Fund	Closed source	Closed-class word
Closed position	Closed timelike curve	Closed communion
Closed Telephone Numbering Plans	Closed form	Closed system

Non User