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|caption=Firing an AT-4 produces a large back blast, a significant problem when operating t ...sing's rim. Additionally, as the shell casing absorbs the majority of the firing stresses, the launch tube can be designed to be very lightweight as it does

...ced [[Mark 37 Gun Fire Control System]] which provided accurate and timely firing solutions against surface and air targets. However, even this advanced syst ...he recoil energy is used to prepare to gun for the next round. The firing pin is cocked, the breech is opened, the spent powder case is ejected from the

...9169.JPEG|thumb|left|<small>'''U.S. Army Swedish K SMG:'''</small> Soldier firing an m/45b SMG during special weapons training. (Notice the incorrect forward ...the stock folded. The m/45 is an [[open bolt]] design with a fixed firing pin. The relatively slow cyclic rate of fire (550–600 rds/min.) and low recoi

...[France|French]], the [[Swiss Army]] and numerous other military services. Firing a [[20 mm caliber]] projectile, it delivered a useful load of explosive fro ...in the barrel to drive the bolt backward. Since the bolt was locked during firing, the heavy bolt of the Oerlikon could be replaced by a much lighter one, wh

...em-Successor''', or '''VRFWS-S'''. This was essentially a power-driven gun firing similar ammunition as the HS.820, the power driven mechanism would ensure o ...[[firearm]]s, the M242 does not depend on gas or [[recoil]] to actuate its firing system. Instead, it uses a 1.0 [[Horsepower|hp]] (750 W) [[Direct current|D

==Firing cycle== ...fety feature incorporated in the design of the trigger mechanism prevented firing the round until the breech-block assembly was in the battery position.

...contract in 1946 for "''Project Vulcan''", a six-barrel weapon capable of firing 7,200 rounds per minute (rpm).<ref>{{Cite web |title = The Gatling Gun |acc ...ses through the firing pin to the primer as each round is rotated into the firing position. The self-powered version, the '''GAU-4''' (called '''M130''' in A

...ng certain [[Torpedo Data Computer|TDC]] bearings matched perfectly before firing two torpedoes at each ship, at an average of {{convert|1000|yd|abbr=on}}, v ...f> Jacobs detected a big, slow tanker. Again, his approach was meticulous, firing one torpedo at a close {{convert|1200|yd|abbr=on}}. It missed. In exasperat

...ging handles. When the trigger is pressed, the bolt closes, and the firing pin is released. The recoil blows back the bolt, feeds a new round onto the bol ...Marine Turret.jpg|thumb|right|A [[United States Marine Corps|U.S. Marine]] firing a turret-mounted Mk&nbsp;19.]]

...]]s. In Germany, [[Ikaria]] further developed the FF gun as the [[MG FF]], firing 20x80RB ammunition. And the [[Imperial Japanese Navy]], after evaluating al ...in the barrel is down to a safe level before the breech opens, the firing pin strikes the primer while the bolt is still travelling forward, so that the

...he magazines, causing the turret to swing uncontrolled through 360-degrees firing wildly until it exhausted its remaining ammo. A statement issued by the Sou ...gedly kept secret". The report says the gun malfunctioned because a spring pin, which is the size of a matchstick, sheared. Other sources blamed poor tra