The first method, called a " gas piston ," uses the high pressure gas ported from the barrel to drive an enclosed piston back against an operating rod or linkage ( they are often one piece ), which in turn unlocks the bolt and drives it rearward, ejecting the spent case and cocking the hammer or striker spring.

The bolt is attached to the block, while a cocking rod ( which is attached to the hammer and designed to catch on the block ) passes through it.

The backward movement simultaneously pulls the cocking rod back, causing the hammer to also be pulled back until it re-engages the sear.

The latest version has the clockwork winding mechanism removed, the ejector rod has been replaced by an automatic ejection system and in the rod's place is a cocking lever that winds the drum automatically.

* Pulling ( manually or electrically ) the bolt assembly / bolt carrier rearward by way of the cocking lever to the point bolt carrier engages a sear and stays at rear position until trigger is activated making bolt carrier move forward

After each shot, a user was advised to raise his revolver vertically while cocking back the hammer so as to allow the fragments of the spent percussion cap to fall out safely.

Manually cocking the hammer moves the hammer back to the point where it catches on the sear.

Pulling the trigger when the hammer is not cocked moves the hammer back by means of a strut, or some other mechanism, which ultimately does not give the hammer as much rearward travel as manual cocking.

The user had to first place the PIAT on its butt, then place two feet on the shoulder padding and turn the weapon to unlock the body and simultaneously lock the firing pin to the butt ; the user would then have to bend over and pull the body of the weapon upwards, thereby pulling the spring back until it attached to the trigger and cocking the weapon.

The shooter begins by cocking the stick back like a slap-shot ( however with not such an exaggerated motion ), and finishes with a flicking of the wrist like a wrist shot.

The most noticeable external difference between the TEC-9 and the later TEC-DC9 is that rings to hold the sling was moved from the side of the gun with the cocking handle, to a removable stamped metal clip in the back of the gun.

In a less common variation, known as the diving back elbow drop, the wrestler stands on the top turnbuckle facing away from the opponent then leaps backwards, extending and cocking one elbow.

Before gassing, cock the marker by pulling back the cocking handle ( located near the front of the marker on the left side of the receiver ).

Pull back on the cocking handle located on the opposite side of the marker from the cyclone feeder ( this is only required once each time a propellant bottle is connected ).

Also in the casing was a cocking ring with projections to cock and fire the gun.

Unlike most DA / SA semi-automatic pistols, for most revolvers, cocking the hammer with the thumb will give a more powerful hammer strike than when the hammer is cocked by pulling the trigger.

The difficulty of the cocking stroke is usually related to the power of the gun, with higher muzzle velocities requiring greater effort.

Spring guns are typically cocked by a mechanism requiring the gun to be hinged at the midpoint ( called a break barrel ), with the barrel serving as a cocking lever.

The PIAT had several advantages over other infantry anti-tank weapons of the period, which included a lack of muzzle smoke to reveal the position of the user, and an inexpensive barrel ; however, this was countered by, amongst other things, a difficulty in cocking the weapon, the bruising the user received when firing it, and problems with its penetrative power.

Changes include tangent type rear sight, separate sliding bolt cover ( as opposed to simultaneously moving ones on all other types after ), hook safety replaced with a large knob cocking piece to protect from gases in case of a blown primer, larger bolt handle knob, improved bolt head, gas port in bolt body, and improved chamber configuration for better cartridge feeding.

The Martini-Henry was a breech-loading single-shot lever-actuated rifle adopted by the British Army, combining the dropping-block action first developed by Henry O. Peabody ( in his Peabody rifle ) and improved by the Swiss designer Friedrich von Martini, whose work in bringing the cocking and striker mechanism all within the receiver greatly improved the operation of the rifle, which new iteration was combined with the polygonal barrel rifling designed by Scotsman Alexander Henry.

The Mark III was a top-loaded air rifle with a fixed barrel and used underlever cocking.

Many bowlers also develop a " slower ball ;" these are bowled with the same arm action as their normal delivery, but come slower from the hand, usually due the bowler gripping the ball differently or cocking his wrist at the last moment.

Although deciding against marketing the Baby Nambu Pistols, Ruger did incorporate the Nambu style rear cocking device and modified the Nambu's silhouette, plus he added a lightweight barrel with fixed sights.

He also imprinted on them his cartoonist coat of arms: a shield with a drawing of his face and the word ' Kem ' on a green field, supported on either side by an African man in white, wearing a red fez and bandana and cocking a snook.

As with the P99, the cocking indicator does not protrude from the slide of the QA variant unless the weapon is fired, as it is in a constant partially cocked state.

", performed while bowing and cocking head ( indicating thought ), followed by standing up with a start on Iya !.

The HW77 and HW77 Carbine, with their rigid barrel and easy cocking and loading, became extremely popular in countries where their lower power was under the legal limit.

The pistol designed with an integral sound suppressor, and was ideal for disabling sentries and other covert work ; the bolt-operated action meant that cocking the gun produced almost no noise, and the bulky but efficient suppressor eliminated nearly all of the muzzle blast.

The Cristobal had a wooden stock, 30-round bottom-mounted box magazine, and tubular receiver with a fixed cocking handle on the right-hand side.

Neither pulling the trigger nor manually cocking the hammer alone rotates the gun's cylinder ; the entire assembly must be cocked to ensure that a chamber is properly lined up with the barrel.

This cocking action causes the cylinder to revolve, thus bringing a fresh chamber into line with the barrel.

This allows for longer sight lines and also gives room for cocking arms, although with a few exceptions ( such as the Baikal IZH-46M ) modern match air pistols use pre-filled air, or less commonly carbon dioxide, containers.

The Model 95 semi-automatic rifle was gas operated using a slide with the cocking handle on its side and gas piston at its front to operate the bolt, with the recoil spring operating on the slide.

With a revolver, this is not necessary as none of the energy for cycling the revolver comes from the firing of the cartridge, but is supplied by the user either through cocking the hammer or, in a double action design, by just squeezing the trigger.

The greater rearward travel afforded by manual cocking translates to greater force in the hammer fall.

Certain revolvers, called double action only ( DAO ) or, more correctly but less commonly self cocking, lack the latch that enables the hammer to be locked to the rear, and thus can only be fired in the double action mode.

The disadvantage of this is the long, heavy pull that cocks the hammer makes the double action revolver much harder to shoot accurately than a single-action revolver ( although cocking the hammer of a double action reduces the length and weight of the trigger pull ).

It differed from other pepperbox revolvers at the time in that it would allow the shooter to rotate the cylinder by the action of cocking the hammer and a pawl locking the cylinder in place, rather than rotating the barrels by hand and hoping for proper indexing and alignment.

Departing from previous Tippmann bodies, the A-5s hammer is completely enclosed within the clam-shell, using a separate overhead cocking mechanism.

When working the action of the Model 1897 the fore end is racked and a long slide comes out of the receiver and ejects the spent shell while simultaneously cocking the external hammer.

Generally, this action serves three purposes: ejecting the spent casing, cocking the hammer or striker for the next shot, and loading another cartridge into the chamber when the slide comes forward.

Automatically cocking the hammer or striker is an important function of double action / single action pistols.

However, some semi-auto pistols are double action only, and are designed to omit this step ( cocking the hammer or striker ).

As the hammer rotates on its axis pin, it acts upon the trigger, and the sear snaps into the cocking notch, holding the hammer.

The Mateba Model 6 uses the recoil from firing to rotate the cylinder and cock the hammer, unlike conventional revolvers, which depend on the user physically pulling the trigger and / or cocking the hammer to actuate the weapon's mechanism of operation.