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L94A1 is the British Ministry of Defence designation for the long-barrelled version of the Hughes EX-34 7.62 mm chain gun, which is fitted to several British Army armoured fighting vehicles, including the Challenger 2 and the Warrior. A second version with a shorter barrel, designated L95A1, was also procured in small numbers. Following the M230LF fielding in theatre in different roles the US military, which call it XM914, issued a Request for Information for additional M-LIDS (Mobile-Low, slow, small unmanned aircraft Integrated Defeat System) in which the Northrop Grumman chain gun finding is the hard-kill Counter-UAS effector. With a weight less than 73 kg without ammunition and a recoil force of less than 7,400 N, it can be fitted to many RCWS designed for hosting 12.7 mm heavy machine guns. The M230LF chain gun can shoot single shot, controlled burst, and full automatic, in the latter mote the firing rate reaching 200 rounds per minute, and provides a lethality range of over 2,000 meters. effective also against Class 1 UAS, Michael Hafften, Director Business Development for Ammunition at Northrop Grumman said, this The MK II will also be fitted to the Type 26 frigates, probably using refurbished mounts removed from Type 23s as they decommission. The Mk 1 mount is fitted to the Type 45 destroyers, the minehunters and some RFAs. Although there is space available, it seems unlikely the Type 31 frigates will be fitted with either 20 or 30mm cannons as they will have two automated Bofors 40mm Mk4 mounts. Vessel Problems with the electrical systems in the Warrior IFV have caused the weapon to fire without warning several times, resulting in the army issuing a safety notice. In at least one incident, this has resulted in injury to a British soldier and in others injuries to civilians. [3] The MoD denied the problem initially. [4]
The Northrop Grumman Bushmaster II Mk 44 30mm is part of a family of chain guns originally developed for armoured fighting vehicles but adapted for naval use. The gun itself weighs 154.6 kg and is 3.4m in length.Stop-gap: the BMARC GCM-AO3-2 mount for twin Oerlikon 30mm, each capable of 650 rpm. These were fitted across the fleet in the mid-late 1980s to replace the 40mm Bofors and provide better close in air-defence or until more Phalanx CIWS mounts were available.
Ed Lopez (2020-07-09). "Army engineers develop greater lethality, speed to support future combat vehicle". US Army. Picatiny Arsenal, New Jersey . Retrieved 2020-10-22. The new gun is expected to increase the rate of fire that is seen now on the Apache. The company is taking experience from its suite of advanced ammunition technologies, like the 30mm ammunition line, to develop 20mm projectiles “with significantly improved lethality against a range of targets including troops, [unmanned aerial vehicles], rotary- and fixed-wing assets, and other assets in the deep battlespace,” Canole said. To replace the rather motley collection of Bofors 40mm, Oerlikon 20mm and the GCM-AO3 with their differing ammunition, training and logistic requirements, the RN opted for modern single 30mm cannon. The LS-30B mount was designed by Laurence Scott Ltd and entered service with the RN in 1989 carrying the Oerlikon KCB 30mm cannon, the system was designated in service as the DS-30B (Laurence Scott having been taken over by MSI Defence Systems Ltd). This mounting and it’s modified descendent, the DS-30M Mk II remain in service today. Seahawk As it was already alluded to, you can change the rate of fire of a chain gun by changing the amount of power going to the drive motor, this is a useful option when switching between ground and air targets. This can also be done with a conventional gun but its a pain in the ass to add artificial friction to the gun mechanism. The L94A1 can only be equipped with one ammo belt consisting of two Armour Piercing (AP) bullets, followed by one Tracer (T) bullet. Neither bullet has much penetration (maximum of 13 mm), however, the AP bullet performs much better than the tracer bullet.Naturally I welcome the news that HMS Queen Elizabeth will receive her 30mm outfit before her first operational deployment later this year. The chain gun operating principle is inherently reliable. An unclassified report on the EX-34 prepared by the Naval Surface Weapons Center in Dahlgren, Virginia, dated September 23, 1983, said that:
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