Guns Systems Checklist

1 .50 Cal Bushmaster Machine Gun2 Lightweight 25mm Bushmaster Chain GunTM

3 25mm M242 Bushmaster Automatic Cannon4 30mm M230 Chain Gun® Automatic Cannon5 30mm M230 LF Chain Gun® Automatic Cannon6 30/40mm Mk44 Bushmaster Automatic Cannon7 35/50mm Bushmaster III Automatic Cannon8 40mm Bushmaster IV Automatic Cannon

Contact www.atk.com or call 480-324-8729 for more information.

.50 Cal Bushmaster Machine GunPHYSICAL DATA

Length . . . . . . . . . . . . . . . . . . . . . .61.00 in (1,550mm)Width . . . . . . . . . . . . . . . . . . . . . .9.45 in (240mm)Height . . . . . . . . . . . . . . . . . . . . . .10.63 in (270mm)Receiver Weight . . . . . . . . . . . . . .35 lb (15.9 kg)Feeder Weight . . . . . . . . . . . . . . .14 lb (6.4 kg)Barrel Weight . . . . . . . . . . . . . . . .27 lb (12.2 kg)Total Weight . . . . . . . . . . . . . . . . .76 lb (34.4 kg)Recoil . . . . . . . . . . . . . . . . . . . . . .1,500 lb (<800 lb w/Adapter)Safety . . . . . . . . . . . . . . . . . . . . . .Anti-hangfire SafetyCase Ejection . . . . . . . . . . . . . . . .ForwardPower Required . . . . . . . . . . . . . .28 vdcClearing Method . . . . . . . . . . . . . .Open bolt

PERFORMANCE DATARate of Fire: . . . . . . . . . . . . . . . . .400/500 spm (w/burst limiter)Dual Feed SystemFires all .50 caliber (12.7mm) series ammunition to include SLAPCompact size and weight facilitates easy upgrades of existingturrets or remote weapon stationsThe .50 Caliber Bushmaster chain gun® is a derivative of thecombat proven M242 25mm Bushmaster Cannon. It incorporatesall of the battle-proven features that have proven so successful inthe Chain Gun Family.

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 1

Lightweight 25mm BushmasterChain GunTM

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .40.14 in (1,019.5mm)Width . . . . . . . . . . . . . . . . . . . . . .10.24 in (260.2mm)Height . . . . . . . . . . . . . . . . . . . . . .10.10 in (256.5mm)Receiver Weight . . . . . . . . . . . . . .32 lb (13.6 kg)Feeder Weight . . . . . . . . . . . . . . .17 lb (10.9 kg)Barrel Weight . . . . . . . . . . . . . . . .14 lb (5 kg)Total Weight . . . . . . . . . . . . . . . . .63 lb (29.5 kg)Recoil . . . . . . . . . . . . . . . . . . . . . .2,200 lb 650 lb (Soft Mount)Power Required . . . . . . . . . . . . . .0.4 Hp @ 28V DC

PERFORMANCE DATARate of Fire . . . . . . . . . . . . . . . . . .250 (rds/min)Feed System . . . . . . . . . . . . . . . . .Dual Belt FeedMethod of Operation . . . . . . . . . .ExternalCaliber . . . . . . . . . . . . . . . . . . . . . .25mm x 59

ATK’s LW25 Bushmaster Chain GunTM meets the warfighter’s needfor a lightweight weapon system that is more flexible, reliable,and lethal than current legacy systems. Its design builds upon thecombat proven Bushmaster tradition of excellence and includessuch features as dual feed with first round select, scaleablelethality from non-lethal to airburst, maintains a high reliability of35,000 Mean Rounds Between Stoppages, can be manned or firedremotely, and has a compact lightweight design.

Contact www.atk.com, LW25@atk.com, or call 480-324-8729 formore information.

Approved for release to public domain — 07-S-2649 — 108124 2

25mm M242 BushmasterAutomatic Cannon

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .105.2 in (2,672mm)Width . . . . . . . . . . . . . . . . . . . . . .12.5 in (318mm)Height: . . . . . . . . . . . . . . . . . . . . . .14.7 in (373mm)Receiver Weight . . . . . . . . . . . . . .97 lb (44 kg)Feeder Weight . . . . . . . . . . . . . . .58.5 lb (26.5 kg)Barrel Weight . . . . . . . . . . . . . . . .107 lb (48.5 kg)Total Weight* . . . . . . . . . . . . . . . .62.5 lb (119.0 kg)Recoil . . . . . . . . . . . . . . . . . . . . . .9,000 lb (40,032 N)Power Required . . . . . . . . . . . . . .1.0 horsepowerClearing Method . . . . . . . . . . . . . .Cook off safe, open boltSafety . . . . . . . . . . . . . . . . . . . . . .Absolute hangfire protectionCase Ejection . . . . . . . . . . . . . . . .Forward

PERFORMANCE DATARate of fire . . . . . . . . . . . . . . . . . .200 rounds per minuteFeed System . . . . . . . . . . . . . . . . .Dual feed, integral to weaponAmmunition . . . . . . . . . . . . . . . . .All NATO standard ammoThe 25mm Bushmaster cannon is a battle-proven performerfeaturing dual feed Chain Gun® technology. More than 11,000M242s are in service world-wide. Its design simplicity, externalpower, round control, ease of maintenance and constant velocityammunition feed make it the most reliable cannon on the modernbattlefield.*Includes gun barrel, drive motor, recoil system and integral dualfeeder.

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 3

30mm M230 Chain Gun® Automatic Cannon

PHYSICAL DATARecoil . . . . . . . . . . . . . . . . . . . . . .3,000 lb (13,334 N)Receiver/Feeder Weight . . . . . . . .88 lb (40.0 kg)Recoil Adapters Weight . . . . . . . .11 lb (5.0 kg)Barrel Weight . . . . . . . . . . . . . . . .32 lb (14.5 kg)Total Weight . . . . . . . . . . . . . . . . .131 lb (59.5 kg)

PERFORMANCE DATARate of Fire . . . . . . . . . . . . . . . . . .625 ± 25 SPMPower Required . . . . . . . . . . . . . .3 Phase, 115 VACCase Ejection: . . . . . . . . . . . . . . . .SideThe 30mm, M230 Automatic Cannon is an area weapon carriedon the U.S. Army AH-64 Apache Attack Helicopter and selectMH-60 Aircraft to provide effective point target fire support andsuppressive fire. Firing the dual purpose, 30mm linkless ammuni-tion at 625 ± 25 SPM, it is capable of destroying targets out to4,000 meters. This makes the M230 an effective, deadly threatagainst light armored vehicle targets, deployed infantry and tar-gets of opportunity.

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 4

30mm M230 LF Chain Gun® Automatic Cannon

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .85.87 in (2,181mm)Width . . . . . . . . . . . . . . . . . . . . . .10.915 in (277.2mm)Height: . . . . . . . . . . . . . . . . . . . . . .11.37 in (288.8mm)Receiver Weight . . . . . . . . . . . . . .76 lb (34.5 kg)Feeder Weight . . . . . . . . . . . . . . .39 lb (17.7 kg)Barrel Weight . . . . . . . . . . . . . . . .45 lb (20.4 kg)Total Weight* . . . . . . . . . . . . . . . .160 lb (72.6 kg)Recoil Ground Vehicle . . . . . . . . .6,300 lb (38,022N)Recoil Naval . . . . . . . . . . . . . . . . .1,650 lb (7,339N)

PERFORMANCE DATARate of Fire . . . . . . . . . . . . . . . . . .Cyclic, 200 rounds per minutePower Required . . . . . . . . . . . . . .1 horsepowerClearing Method . . . . . . . . . . . . . .Cook off safe, open boltSafety . . . . . . . . . . . . . . . . . . . . . .Absolute hangfire protectionCase Ejection . . . . . . . . . . . . . . . .SideReliability . . . . . . . . . . . . . . . . . . .22,000 mean rounds between . . . . . . . . . . . . . . . . . . . . . . . . . . .failure

The M230 LF is a link feed version of the 30mm Apachehelicopter Chain Gun® cannon. The weapon fires NATO standard30mm ADEN/DEFA and M788, M789, M799 ammunition. TheM230 LF is ideal for use on ground vehicles and patrol boats inturrets or remote weapon stations.*Includes gun barrel, drive motor, recoil system and integral feed-er.

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 5

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 6

30/40mm Mk44 BushmasterAutomatic Cannon

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .134.05 in (3,405mm)Width . . . . . . . . . . . . . . . . . . . . . .13.5 in (343mm)Height: . . . . . . . . . . . . . . . . . . . . . .15.43 in (392mm)Receiver Weight . . . . . . . . . . . . . .122 lb (55.3 kg)Feeder Weight . . . . . . . . . . . . . . .69 lb (31.3 kg)Barrel Weight . . . . . . . . . . . . . . . .153 lb (69.4 kg)Total Weight . . . . . . . . . . . . . . . . .344 lb (156 kg)Recoil . . . . . . . . . . . . . . . . . . . . . .8,000 lb (35,584 N)Power Required . . . . . . . . . . . . . .1.0 horsepower Clearing Method . . . . . . . . . . . . . .Cook off safe, open boltSafety: . . . . . . . . . . . . . . . . . . . . . .Absolute hangfire protectionCase Ejection . . . . . . . . . . . . . . . .Forward

PERFORMANCE DATARate of fire . . . . . . . . . . . . . . . . . .200 rounds per minuteFeed System . . . . . . . . . . . . . . . . .Dual feed, integral to weaponAmmunition . . . . . . . . . . . . . . . . .Fires all NATO standard 30mm x173 and the new Super 40 ammunition and ABMThe Mk44 has become the weapon of choice for the world'smedium caliber fighting platforms to include ground vehicle, navaland aircraft applications. It has proven performance featuring dualfeed Chain Gun® technology. It can fire all types of 30mm x173mm ammunition; can be chambered for 30x170mm Rarden andis capable of being easily converted to fire Super Forty 40mmammunition for built in growth capability.

35/50mm Bushmaster III Automatic Cannon

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .158.19 in (4,018mm)Width . . . . . . . . . . . . . . . . . . . . . .16.94 in (430mm)Height: . . . . . . . . . . . . . . . . . . . . . .18.83 in (478mm)Receiver Weight . . . . . . . . . . . . . .35mm – 150 lb (68 kg) . . . . . . . . . . . . . . . . . . . . . . . . . . .50mm – 150 lb (68kg)

Feeder Weight . . . . . . . . . . . . . . .35mm – 80 lb (36 kg) . . . . . . . . . . . . . . . . . . . . . . . . . . .50mm – 80 lb (36 kg)

Barrel Weight . . . . . . . . . . . . . . . .35mm – 250 lb (113 kg) . . . . . . . . . . . . . . . . . . . . . . . . . . .50mm – 280 lb (127 kg)

Total Weight . . . . . . . . . . . . . . . . .35mm – 480 lb (218 kg) . . . . . . . . . . . . . . . . . . . . . . . . . . .50mm – 510 lb (231 kg)

Power Required . . . . . . . . . . . . . .3.0 horsepower Clearing Method . . . . . . . . . . . . . .Cook off safe, open boltSafety . . . . . . . . . . . . . . . . . . . . . .Absolute hangfire protectionCase Ejection . . . . . . . . . . . . . . . .Forward

PERFORMANCE DATARate of fire . . . . . . . . . . . . . . . . . .200 rounds per minuteFeed System . . . . . . . . . . . . . . . . .Dual feed, integral to weapon . . . . . . . . . . . . . . . . . . . . . . . . . . .Linkless feed available

Ammunition . . . . . . . . . . . . . . . . .All NATO standard ammoThe 35mm Bushmaster cannon incorporates all of the battle-proven features of the 25mm Bushmaster Chain Gun ® cannon.The weapon is capable of being converted to fire 50mmSupershot ammunition.

Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 7

40mm Bushmaster IVAutomatic Cannon

PHYSICAL DATALength . . . . . . . . . . . . . . . . . . . . . .158.19 in (4,018mm)Width . . . . . . . . . . . . . . . . . . . . . .16.94 in (430mm)Height: . . . . . . . . . . . . . . . . . . . . . .18.83 in (478mm)Receiver Weight . . . . . . . . . . . . . .437 lb (198 kg)Feeder Weight . . . . . . . . . . . . . . .65 lb (29 kg)Barrel Weight . . . . . . . . . . . . . . . .305 lb (138 kg)Total Weight . . . . . . . . . . . . . . . . .807 lb (365 kgl)Power Required . . . . . . . . . . . . . .5.0 horsepower @ 24 voltsClearing Method . . . . . . . . . . . . . .Cook off safe, open boltSafety . . . . . . . . . . . . . . . . . . . . . .Absolute hang- fire protectionCase Ejection . . . . . . . . . . . . . . . .Forward

PERFORMANCE DATARate of fire . . . . . . . . . . . . . . . . . .200 rounds per minuteFeed System . . . . . . . . . . . . . . . . .Linkless, integral to weaponRecoil . . . . . . . . . . . . . . . . . . . . . .14,000 lb/62,272 NAmmunition: . . . . . . . . . . . . . . . . .Fires all Bofors 40mm L70 . . . . . . . . . . . . . . . . . . . . . . . . . . .NATO standard ammunition

The Bushmaster IV automatic cannon is propelling Chain Gun®technology into the 21st century. This compact, cost-effectiveweapon is available today, yet has the devastating firepower thatwill be needed to defeat the threats of tomorrow. Capable ofaccommodating a next round select, linkless feed system, it incor-porates all of the battle-proven features of the 25mm M242Bushmaster cannon, with significant system commonality for low-risk and proven performance.Contact www.atk.com or call 480-324-8729 for more information.

Approved for release to public domain — 04-S-3014 — 108124 8