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Overview

The HK XM8 is a German-American assault rifle system developed by Heckler & Koch and Alliant Technosystems. It was designed in the early 2000s as part of the OICW Project, and was presented to the United States Army as a possible replacement weapon. At the end of October 2005, the US Army cancelled the project, however the Malaysian Navy took interest in the weapon and it has been in service with them since 2010, where they operate modified versions of the weapon.

Variants

HK XM8 Carbine
The standard model carbine has an 318mm barrel (12.5"), it can fit the HK XM320 grenade launcher in an underslung position.
HK XM8 Compact Carbine
The compact model has a collapsing or folding stock and a shorter barrel length of 229mm (9").
HK XM8 Sharpshooter Rifle
The sharpshooter rifle is a designated marksman rifle variant, it has a barrel length of 508mm (20") and an integrated folding bipod.
HK XM8 Automatic Rifle
The automatic rifle is a light machine gun variant similar to the sharpshooter rifle, it has the same barrel length of 508mm (20") and a folding bipod.
Heckler & Koch Products
Firearms HK
Military Rifles 3233 (A2A3)36505153241416 (A5A7C)417 (A2)G3 (A1A2A3A4)G11 (K1K2)G36 (A1A2CC3EKKEKVV)G41 (A1A2A3K)GR2GR6MSG90 (A1SDN)PSG1 (A1)XM8XM29
Civilian Rifles 94243293770940MR308MR556 (A1)MR762 (A1)SL6SL7 (Match)SL8USC
Submachine Guns 54MP5 (A1A2A3A4A5)MP7 (A1A2)UMP (94045)
Machine Guns 11 (A1E)13 (E)21 (A1E)23 (E)2593121123GR9MG 4 (EKKE)MG 5 (A1A2S)MG36
Shotguns 512CAWSFP6M27 IAR
Pistols 445 (CCTT)1911Mk 23P2 (A1)P7P9P1130 (L)P46P2000 (SK)UCPUSPVP9VP40VP70
Grenade Launchers 69 (A1)79AG36GMGM320XM25XM29
Ammunition
Cartridges 4.6x30mm HK4.6x36mm HK
USA 1960 Weapons of the United States of America USA Army
After 1945
Infantry Weapons
Melee Weapons Knives Ka-BarM7M9M11OKC-3S
Sidearms Pistols GI M1 GI M2GI M3GI M4GI M5ICQBGyrojetKP-9M9 (A1A2A3)M11M17M18M45 (A1)OA-93OA-96OA-98RM380
Machine Pistols M10M11MP9
Close Quarters Personal Defense Weapons Colt MARSMP7 (A1A2)IO MP2PDR (CD)
Submachine Guns Colt RO635HK MP5-N (MP5K-NMP5SD-N)MP9
Shotguns (automatic) AA-12 (CQB)Atchisson Assault Shotgun
Shotguns (semi-automatic) KOMRADM1014 JSCS
Shotguns (manual-action) M26M500M590 (A1)M870
Primary Weapons Assault Rifles AAI ACRBushmaster ACRColt 601Colt 602DT MDRHK 416LVOA-SLSAT RifleM16 (A1A2A3A4)M17SM468MAS .223MasadaMk 4Mk 16R5REC7Remington ACRSaintStoner 63 (A)XM8XM22 (E1)XM29
Assault Carbines Carbon 15 (Type 97)DT MDR-CLVOA-CM4 (M4A1)XM177 (E1E2)
Battle Rifles DT MDRHK 417M14 (E1E2)Mk 17SA58
Battle Carbines DT MDR-C
Assault Rifles (Exotic) .50 Beowulf Assault RifleAR57SR-47
Assault Carbines (Exotic) KAC PDW
Automatic Support Weapons Light Machine Guns KAC LMGM15M27 IARStoner 86Stoner 96XM106XM207
General Purpose Machine Guns [[]]
Heavy Machine Guns [[]]
Long Range Anti-Materiel Rifles [[]]
Bolt-Action Rifles HTIM24 (A1A2A3E1)M40 (A1A3A5A6)M2010Mk 13 (Mod 5Mod 7)Remington 700SRS (A1A1 CovertA2A2 Covert)
Designated Marksman Rifles M21 SWSM38 DMRM39 EMRM110 SASS (A1)Mk 14 EBRXM110 SASS
Launchers Grenade Launchers (Attachment) 40mm FN40GL40mm M203 (A1A2)40mm M32040mm XM148
Grenade Launchers (Standalone) 25mm XM25 CDTE40mm China Lake40mm EX 4140mm M3240mm M7940mm M32040mm T148E1
Disposable Rocket Launcher 83.5mm M14184mm M136139.7mm FGM-172
Rocket Launchers 66mm M72 (A1A2A3A4A5A6A7A8A9A10)66mm M202 (A1)84mm M3 MAAWS
Underwater Weapons Assault Rifles [[]]
Explosives Anti-Personnel Mines M18 (A1)MM-1
Anti-Tank Mines M15M19M21
Offensive Grenades AN/M14 ThermiteM7A3 CS GasM25A2 Riot ControlM47 Riot ControlM67 FragM84 Stun
Smoke Grenades AN/M8AN/M18AN/M83 White Smoke Grenade
Firearm Accessories
Weapon Sights Collimator CrossfireRazorRX30Razor AMG UH-1SPARC ARSPARC IISpitfire 3xSpitfire ARStrikefire IIVenomViper
Holographic EOTech 553
Iron [[]]
Night [[]]
Reflector [[]]
Telescopic Crossfire II (1-4x242-7x32 Rimfire2-7x32 Scout Scope2-7x323-12x56 AO3-9x403-9x504-12x40 AO4-12x444-12x50 AO4-16x50 AO6-18x44 AO-24x50 AO)Copperhead 4-12x44Diamondback (1.75-5x322-7x35 Rimfire3-9x403.5-10x504-12x40)Diamondback Tactical (3-9x404-12x404-16x44 FFP6-24x50 FFP)Golden Eagle HD 15-60x52Ranger 1-4x24Razor HD (5-20x50 FFPAMG 6-24x50)Razor HD Gen II (4.5-27x56 FFP3-18x50 FFPE 1-6x24)Razor HD LH 3-15x42Strike Eagle (1-8x241-6x24)Viper (6.5-20x50 PAHS 2.5-10x44HS 4-16x44HS 4-16x50HS LR 4-16x50HS LR 6-24x50HST 4-16x44HST 6-24x50PST Gen II 1-6x24 (FFP)PST Gen II 3-15x44 (FFP)PST Gen II 5-25x50 (FFP)
Attachments Flashlights & Lasers [[]]
Foregrips & Bipods [[]]
Infantry Equipment
Camouflage Camouflage ERDLODMARPATUCPWoodland
Clothing Backpacks [[]]
Body Armour [[]]
Bomb Suit [[]]
Elbow and knee pads [[]]
Signals & IFF [[]]
Suits [[]]
Vests & Webbing [[]]
Headwear Communication [[]]
Gas Masks & Rebreathers [[]]
Goggles [[]]
Helmets [[]]
Vehicle Headwear [[]]
Optics, Detection and Surveillance Man-Portable Radar [[]]
Mine Detectors [[]]
Night Vision Goggles [[]]
Periscopes [[]]
Rangefinders [[]]
Surveillance [[]]
Artillery
Anti-Aircraft Guns [[]]
Anti-Tank Guns [[]]
Field Guns [[]]
Howitzers [[]]
Infantry & Mountain Guns [[]]
Mortars 81mm M252107mm M30120mm M121
Railroad Artillery [[]]
Recoilless Guns [[]]
Rocket Artillery [[]]
Siege Artillery [[]]
Land Vehicle Weapons
Vehicle Machine Guns FN MAGGAU-19M2M3PM37M60M73M219M231 FPWM240M1919XM238
76mm Tank Guns M32T91E3T185 (E1)
90mm Tank Guns M3M41M54T7T15E2T54T76T125T208 (E9E13)T209
105mm Tank Guns M68 (A1E1)QF20 PdrT5E1T5E2T140 (E3E4)T147T254 (E2)X15E8XM35
120mm Tank Guns M58M256T53T122T123E1T123E6T179RheinmetallX23
152mm Tank Guns M81 (E1)XM81 (E6)XM150 (E5E6)
155mm Tank Guns T7 (E1)T180
165mm Tank Guns M57T156
175mm Tank Guns M113T256E3
203.2mm Tank Guns M1
Howitzers 105mm M2 (A2)105mm M4105mm M49105mm M103105mm XM104T96E1105mm XM103155mm M45155mm M126 (A1)155mm M185155mm M284T186E1203.2mm M1203.2mm M2 (A1A2)203.2mm M201A1240mm M1
Vehicle Autocannon 20mm M16820mm Rh 20225mm M24225mm Oerlikon KBA40mm M2 (A1)75mm XM274
Aircraft Weapons & Munitions
12.7mm Aircraft Machine Guns Browning M2 (AN/M2AN/M3)GAU-19
Aircraft Cannons below & including 30mm 20mm AN/M220mm AN/M320mm M2420mm FMC T-160
Aircraft Cannons above 30mm [[]]
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