| HK417 | |
|---|---|
 A G27 rifle, an improved variant of the HK417 | |
| Type | Battle rifle |
| Place of origin | Germany |
| Service history | |
| In service | 2006–present |
| Used by | SeeUsers |
| Wars | SeeConflicts |
| Production history | |
| Designer | Heckler & Koch |
| Manufacturer | Heckler & Koch |
| Produced | 2006–present |
| Variants | SeeVariants |
| Specifications | |
| Mass |
|
| Length |
|
| Barrel length |
|
| Width | 78 mm (3.1 in) |
| Height | 213 mm (8.4 in) |
| Cartridge | 7.62×51mm NATO |
| Action | Gas-operated short-stroke piston,rotating bolt |
| Rate of fire | 600 rounds/min |
| Muzzle velocity |
|
| Effective firing range |
|
| Feed system | 10- or 20-round detachablebox magazine |
| Sights | Iron oroptical sights (Picatinny rail) |
TheHeckler & Koch HK417 is abattle rifle designed and manufactured byHeckler & Koch.[1]
Being the larger caliber version of theHeckler & Koch HK416, and chambered for the7.62×51mm NATOrifle cartridge, it is intended for use where the penetrative power,stopping power, and range of the5.56×45mm NATO HK416 would otherwise be insufficient. The HK417 isgas-operated, has arotating bolt and is capable ofselective fire.
The HK417 has been adopted for service by a number ofarmed forces,special forces, andpolice organizations throughout the world, including theBundeswehr,United StatesJoint Special Operations Command, theUnited States Army, RussianSpetsnaz forces such asFSB Alpha Group, and others.
The HK417 is similar in internal design to theHK416, although the receiver and working parts are enlarged to suit the larger 7.62×51mm cartridge. The bolt is a seven-lugrotating type, which sits in a bolt carrier and operates in a forged alloy receiver resembling those of the Stoner-designedAR-10,AR-15 andM16 rifles.
Like the HK416, the HK417 isgas-operated with ashort-stroke piston design similar to that of theHeckler & Koch G36. The short-stroke piston may be more reliable than the originaldirect impingement operation of theAR-15 design because, unlike these weapons, it does not vent propellant gases directly into thereceiver, which deposits carbon fouling onto the bolt mechanism as well as heating it up.[2]
The early HK417 prototype used 20-round magazines from theHeckler & Koch G3 rifle family, which did not feature a bolt hold-open device. Later prototypes, however, switched to a polymer magazine with bolt hold-open. The magazine resembles an enlarged version of theG36's transparent magazine, except without the pins forholding more than one magazine together.
Purchasers of the HK417 have typically intended it to complement lighterassault rifles chambered for less powerfulintermediate cartridges (often5.56×45mm NATO), for thedesignated marksman role. The HK417's greater accuracy, effective range, and penetration offset its greater expense, its lower rate of fire, and its smaller ammunition capacity both in magazine and carriage.
The HK417 models chambered for 7.62×51mm NATO available to the military and law enforcement market are:
TheHK417A2 is an improved version. The design of the receiver, barrel interface, gas port and the bore axis alignment of the rifle have been further optimised to increase its accuracy and reliability.[1] TheGerman Army uses the HK417 A2 - 13″ with the designationG27.[3]
As of 2013, the HK417A2 models chambered for 7.62×51mm NATO available to the military and law enforcement market are:
A barrel can be changed in under two minutes with simple tools. All HK417 barrels are cold hammer forged and chrome-lined and use a conventional lands and groovesbore profile with a twist rate of 1 turn in 279.4 mm (11.00 in). They are designed to function reliably with bullet weights ranging from 9.3 to 11.34 g (144 to 175 gr) and are threaded for aflash hider or soundsuppressor. Optional accurized barrels with a different chrome treatment can provide up to 0.3mil (1moa) accuracy (withmatch grade ammunition).[4]
After using the HK417 as a stopgapdesignated marksman rifle under the G27 designation, the civilian MR308 was used to develop the G28, a designated marksman rifle for the GermanBundeswehr (Federal Army) deployment to theWar in Afghanistan. The semi-automatic G28 is chambered for 7.62×51mm NATO and has a factory warrantied accuracy of 45 mm dispersion at 100 meters (0.45 mil or 1.5 moa) when fired with 10 rounds using OTM/HPBT/Sierra Match King ammunition. The G28 features STANAG 4694NATO Accessory Rails that are backwards-compatible with the STANAG 2324/MIL-STD-1913Picatinny rails. The upper receiver is made fromsteel instead of HK'saluminium alloy. Approximately 75% of the parts are interchangeable with the HK417. There are two different versions of the G28: G28 E2 (Standard) with aSchmidt & Bender 3–20×50 PM II (modified toBundeswehr requirements) and the G28 E3 (Patrol) with Schmidt & Bender 1–8×24 PM II.[5] By October 2017, Heckler & Koch had renamed the G28 as the HK241, though G28 remains its Bundeswehr designation.[6]
The M110A1 CSASS is the U.S. Army's type designation for theCompact Semi-Automatic Sniper System.[7] In April 2016, Heckler & Koch confirmed that a lighter version of the G28 had won theUnited States Army's CSASS contract to replace theM110 Semi-Automatic Sniper System.[8] The M110A1 uses an aluminum upper receiver instead of steel to meet weight requirements, weighing 8.4 lb (3.8 kg) unloaded and reaching some 15 lb (6.8 kg) loaded and with accessories; the M110A1 features a GeisseleM-LOK rail handguard,Schmidt & Bender 3–20×50 PM II Ultra Shorttelescopic sight, Geissele optic mount, OSS SRM6 suppressor, 6-9 Harris bipod and mount, and a collapsible stock with adjustable comb.[7][9] In May 2018, theU.S. Marine Corps will begin receiving the CSASS, also to replace the M110.[10] There has been some small-scale testing of the CSASS since then but no news of widespread fielding or adoption.[11][12] However, the Army has shown small scale testing and use of the M110A2, an upgraded version of Knight's Armament Company's M110 SASS.[13][14] The Navy and Marine Corps have also designated funding for a M110 SASS Product Improvement Program (PIP).[15][16]
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The M110A1 SDMR is a SquadDesignated Marksman Rifle (SDMR) being issued to US Army infantry squads to replace theM14 EBR.[17] In March 2018, the Army announced that a version of the G28E-110 would be issued to infantry squads as the service's standard SDMR. While undergoing evaluation by PEO Soldier, it was designated as M110E1.[17] Issuing a 7.62×51mm NATO SDMR is meant to increase individual squads' ability to engage distant threats and defeat enemy body armor that standard 5.56×45mm NATO rounds cannot penetrate. The M14 EBR was previously issued for this role, but because it was based on an operational needs statement they had to be turned in by units at the end of a combat deployment.[18] Unlike the sniper configuration, the SDMR model will be equipped with a different buttstock and barrel twist than the CSASS model. The SDMR model will also fire M80A1 Enhanced Performance Rounds or XM1158 Advanced Armor Piercing Rounds rather than sniper rounds.[19] The marksman version is fitted with a simpler SIG TANGO6 1-6×24 telescopic sight to make quick adjustments between 0–600 m (0–656 yd) and features a red horseshoe dot for fast aiming and an illuminated Extended Range Bullet Drop Compensation (BDC) illuminated front focal plane reticle.[20] It will also be fielded with a suppressor to lessen its sound signature. Roughly 6,000 are planned to be fielded with one persquad in infantry, engineer and scout formations.[21][19] Early testing began with several U.S. Army combat units receiving the first M110A1 SDMRs in fall 2018.[19][22] Fielding to all close combat squads is expected to be completed in late 2023.[23]
TheMR308 is a civilian variant of the HK417, introduced in 2007 alongside the MR223, a civilian HK416.[24] It is asemi-automatic rifle with several "sporterized" features.[example needed] At the 2009SHOT Show, the two rifles were introduced to the American civilian market as the MR762 and MR556, respectively.[25] Since then, both were replaced by the improved MR762A1 and MR556A1.[26][27]
| Country | Organization name | Model | Quantity | Date | Reference |
|---|---|---|---|---|---|
 Austria | Jagdkommando | HK417P | – | – | [28] |
 Australia | Australian Army acquired 16″ 'Recce' variants paired with 6×ACOG for a designated marksman solution foruse in Afghanistan and afterwards | 16″ 'Recce' | – | 2010 | [29][30] |
 Brazil | Brazilian Army | – | – | 2012 | [31] |
| Federal Police of Brazil | – | – | 2012 | [31] | |
 Bulgaria | Joint Special Operations Command | – | – | 2024 | [32] |
 Czech Republic | 601st Special Forces Group | – | – | – | [33] |
 Denmark | Used by theRoyal Danish Army as adesignated marksman rifle. Set to be replaced by theColt Canada C20 DMR in the first quarter of 2021. | 20″ 'Sniper' | – | – | [34][35] |
 Estonia | Estonian Special Operations Force uses it as a designated marksman rifle | – | – | – | [36] |
 France | Commandement des Opérations Spéciales (COS) | HK417 A2 - 20" | – | – | [37] |
 Germany | German Army uses the HK417 - 16″ as the G27 | 16″ | – | – | [3] |
| German Army uses the HK417A2 - 13″ as the G27K | 13″ | – | – | [3] | |
 Indonesia | Denjaka (counter-terrorism special operations force of theIndonesian Navy). | G28 | – | – | [38] |
| Taifib (Amphibious Reconnaissance Battalion of theIndonesian Navy). | G28 | - | - | [38][39] | |
| Bakamla (Indonesian Maritime Security Agency). | G28 | - | - | [40] | |
 Ireland | Defence ForcesArmy Ranger Wing sniper teams | – | – | 2010 | [41] |
 Japan | Japan Ground Self-Defense Force,Special Forces Group (Japan) In January 2023, the G28 was selected as standard issue sniper rifle | – | – | 2014 | [42][43][44] |
 Luxembourg | Luxembourg Armed Forces Being procured alongside HK416 from May 2023. | HK417 A2 | – | 2023 | [45] |
 Malaysia | Pasukan Khas Laut sniper teams of theRoyal Malaysian Navy | – | – | 2006 | [46] |
 Netherlands | Korps Commandotroepen (KCT) of theRoyal Netherlands Army acquired the 16″ 'Recce' paired withAimpoint CompM2 orSchmidt & Bender 3–12×50 PM II | – | – | 2011 | [47][48] |
 Norway | Norwegian Armed Forces uses it as a sharpshooter and designated marksman rifle | HK417N | – | 2007 | [49][50] |
 Poland | Policja | – | – | – | [51] |
 Portugal | Special Operations Troops Centre of thePortuguese Army | HK417, G28 | [52] | ||
| Core of Tactical Operations of Protection of thePortuguese Air Force | HK417,G28 | [53] | |||
| Special Operations Intervention Group (GIOE) of theNational Republican Guard | HK417, G28 | [54] | |||
| Tactical Actions Group (GAT) of theMaritime Police | G28 | [55] | |||
 Russia | Spetsnaz snipers of law enforcement agencies | MR308 | – | – | [56][57] |
 Slovenia | Slovenian Special Police Unit (Specialna Enota Policije) | HK417 | – | – | [58] |
 South Korea | 707th Special Mission Group | G28 | – | 2017 | [59][60] |
 United Kingdom | Special Air Service | HK417 (L2A1) - 12", 16" and 20" | – | 2009 | [61] |
 United States | United States Army | M110A1 | 3,643 (planned) | – | [8] |
 Ukraine | Armed Forces of Ukraine | Supplied bythe Netherlands | — | — | [62] |
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The gun will replace the M110 made by Knight's Armament as a culmination of the Army's desire for a shorter, lighter rifle that didn't sacrifice accuracy or performance.
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