Mk 14 Enhanced Battle Rifle


Mk 14 EBR
PEO M14 EBR-rbg.png
Mk 14 Enhanced Battle Rifle "Rock Island", used by the U.S. Army
TypeBattle rifle
Designated marksman rifle[1]
Place of originUnited States
Service history
In service2002–present
Used bySee Users
WarsWar in Afghanistan
Iraq War
Syrian Civil War[2][3]
Iraqi Civil War (2014–2017)
Production history
DesignerMike Rock and Jim Ribordy (Original)
Smith Enterprise, Inc. (Current)
ManufacturerNaval Surface Warfare Center Crane Division
Smith Enterprise Inc.(Supplying parts)
Sage International (For the stock)
Mass11.24 lb (5.1 kg)[4]
Length35 in (889 mm)[4]
Barrel length18 in (457 mm) (Mod 0)[4]
22 in (558.8 mm) (Mod 1) (EBR-RI)

Cartridge7.62×51mm NATO
ActionGas-operated, rotating bolt
Rate of fire700–750 rounds/min
Muzzle velocity853 m/s (2,800 ft/s)
Effective firing range600m+[5]
Feed system10-, or 20-round detachable box magazine
SightsModified M14 iron sights, normally used with a magnifying scope

The Mk 14 Enhanced Battle Rifle (EBR) is an American military selective fire battle rifle chambered for the 7.62×51mm NATO cartridge. It is a variant of the M14 battle rifle and was originally built for use with units of United States Special Operations Command, such as the United States Navy SEALs, Delta Force, and task specific Green Berets ODA teams/units.[6]

These weapons are made for both the designated marksman and the close combat roles. Since 2010, the U.S. Army has assigned two M14 EBR-RI rifles per infantry platoon for units deploying to Afghanistan. The M14 EBR-RI has a standard weight 22.0-inch (560 mm) barrel and lugged GI flash hider; it is not to be confused with the Mk 14 Mod 0 or Mod 1.


Development began in 2000 with a request by the United States Navy SEALs for a more compact M14 battle rifle.[7] In 2001, Mike Rock Rifle Barrels was the only rifle barrel maker asked by United States Special Operations Command to participate in a SOPMOD conference to create what would be the Mk 14 Mod 0 EBR, with details that include a collapsible stock that was requested for the new rifle and with an aluminum body with telescopic rails. Mike Rock collaborated with engineer Jim Ribordy to make the new rifle. Tests showed that their rifle was effective, but had excessive noise problems.

U.S. Army service in Afghanistan, September 2010

In 2003, Ron Smith and Smith Enterprise, Inc. created its own version of the M14 EBR (MK14 SEI),[8] which used a medium heavy weight 457 mm (18.0") barrel and was more widely favored than the rifle made by Rock and Ribordy. The Smith Enterprise-based MK14 was then used as a basis to eventually create the Mk 14 Mod 0 with Springfield Armory, Inc. being tasked to supply the necessary machinery needed to create the weapon in cooperation with the Naval Surface Warfare Center Crane Division.

United States Navy SEALs were the first to be armed with the EBR in 2004,[5] followed by the U.S. Coast Guard. The U.S. Army also uses with the M14 EBR-RI, being created and updated by the Weapons Product Support Integration Directorate of the TACOM Life Cycle Management Command at the Keith L. Ware Test Facility in Rock Island Arsenal, Illinois; having fielded approximately 5,000 units by mid-2010. United States Marine Corps units were[when?] also considering the EBR, but wound up instead developing the M39 Enhanced Marksman Rifle.

In early 2017, the Army began writing a new requirement for an SDM rifle for combat platoons and squads. Although the Army has been using the M14 EBR since 2009, they had to be turned in when returning from theater, and it had weight issues being almost 15 lb (6.8 kg) unloaded. A new marksman rifle will equip each combat arms squad weighing about 11 lb (5.0 kg) firing standard M80A1 7.62 mm rounds fitted with a rifle optic rather than a telescopic sight.[9] In March 2018, the Army announced that a version of the HK G28, which had already been selected to replace the M110 SASS, would be issued as the service's standard SDMR. Issuing a 7.62 mm SDMR is meant to increase individual squads' ability to defeat enemy body armor that standard 5.56×45mm rounds cannot penetrate. Fielding was planned to start in late 2018.[10]


This weapon upgrades the standard M14 action and replaces the standard 22.0-inch (560 mm) barrel with an 18.0-inch (460 mm) barrel bolted onto a telescoping chassis stock system[6] with a pistol grip, a different front sight, Harris bipod, four Picatinny accessory rails (which surround the barrel),[6] and a more effective flash hider in place of the standard lugged USGI flash suppressor.[11] A paddle-type bolt stop similar to that of the M4 carbine is used on the rifle. The EBR chassis system stock is made up entirely of lightweight aircraft alloy.

A Kydex hand guard and M68 CCO are also added, though they are almost always replaced with a vertical foregrip and magnifying scope for better handling and for use in a designated marksman role.[citation needed] A Wind Talker suppressor can be mounted on the DC Vortex flash hider,[12] though the U.S. military did not adopt one to active service.

Sage International had some involvement in the decision of whether to invest approximately $120,000 in an injection mold incorporating into the design the rail attachments or machine the replacement stock from a solid billet of aluminum with the latter being selected, which was then shown at the SHOT Show in Orlando in 2003.

The Mk 14 has been criticised for being too heavy, at 14 pounds (6.4 kg) when loaded with a 20 round magazine, with most of this weight being at the front of the weapon, making it difficult to aim.[13]


Several configurations are available on the Mk 14 Mod 0 EBR, including the attachment of an AN/PVS-4 night vision scope. Others had included the capability of adding two different scopes or sights on the Picatinny rails, for more precision or zoom level.[citation needed]


Following the development of the Mk 14 Mod 0 EBR, several variants of the M14 rifle utilizing the Sage Chassis System have been developed and fielded by various branches of the U.S. military. A summary of variants, and the components utilized in each, are as follows:

Mk 14 Mod 0[14] Mk 14 Mod 0 /
Mk 14 SEI
Mk 14 Mod 1[16] Mk 14 Mod 2[16] M39 EMR M14 EBR-RI[17] M14 EBR-RI NM[18] M14 T[19]
Branch of service U.S. Navy and U.S. Air Force U.S. Air Force U.S. Navy U.S. Navy U.S. Marine Corps U.S. Army U.S. Army U.S. Coast Guard
Years built 2004–2005 2004–2008 2006 2011 2007 2008–2011 2010 2005
Builder NSWC Crane Smith Enterprise, Inc. NSWC Crane NSWC Crane PWS Quantico Rock Island Arsenal – TACOM Rock Island Arsenal – TACOM NSWC Crane
Quantity built 1000 125 (rebuilt Mk 14 Mod 0 rifles) 500 ~ 250 700 6200 not available 500
Chassis Sage M14ALCS Sage M14ALCS (milled rail) Sage M14ALCS/CV Sage M14ALCS/PMRI-HB Sage M14ALCS (milled rail) Sage M14ALCS Sage M14ALCS/PMRI Sage M14ALCS
Color NSG NSG NSG NSG NSG Black (NSG – rare) Black NSG
Pistol grip Sage 90905 Sage 90905 TangoDown BG-16 FDE Sage M14ERGO Sage 90905 Sage M14ERGO Sage M14ERGO Sage 90905
Handguard Black full Black full Tan short Black full Tan full (black full - rare) Black full Black full Black full
Vertical fore grip Sage M14VFG (90906) Sage M14VFG (90906) TangoDown BGV-MK46 FDE - - Sage M14VFG (90906) - Sage M14VFG (90906)
Butt stock Sage M14ALCS-BS Sage M14ALCS-BS Sage M14ALCS/CV-BS Sage M14ALCS/PMRI-BS Sage M14ALCS-BS Sage M14ALCS-BS Sage M14ALCS/PMRI-BS Sage M14ALCS-BS
Butt stock extension - - - Sage M14VABEK/PMRI Sage M14BEK (90911) - - -
Selector switch/lock Switch Switch Switch Lock Lock Lock Lock Switch
Barrel SAI 18" Std. 1-11 ("Bush") SEI 18" Std./Med. 1-10 SAI 18" Std. 1-11 ("Bush") 22" heavy 1-10 Krieger 22" Med. 1-12 (DMR) USGI 22" Std. SEI 22" Med. 1-10 USGI 22" Std.
Flash hider SEI 2000V SEI 2000V SureFire FH762KM14 SEI 2000V USGI (NM) USGI (NM) USGI (NM) SEI 2001
Suppressor M14 direct connect sound suppressor M14 direct connect sound suppressor SureFire 762K-DE Wind Talker sound suppressor - - - -
Front sight XS USN2 (11-2166-580-1) XS USN2 (11-2166-580-1) XS USN2 (11-2166-580-1) - USGI (NM .062) USGI (NM - rare) USGI (NM - rare) XS USN2 (11-2166-580-1)
Rear sight XS large aperture (0.125") XS large aperture (0.125") XS large aperture (0.125") - USGI (NM - rare) USGI (NM - rare) USGI (NM - rare) XS large aperture (0.125")
Gas lock SEI 2013 (GLFS-D-18) SEI 2013 (GLFS-D-18) SEI 2013 (GLFS-D-18) USGI USGI USGI USGI USGI
Gas system USGI SEI 2071, 2075, 2076 USGI SEI 2071, 2075, 2076 USGI USGI SEI 2071, 2075, 2076 USGI
Bolt stop/release SEI 2003 SEI 2003 SEI 2003 SEI 2003 USGI USGI USGI SEI 2003
Optic Leupold Mk 4 1.5-5x (67905) Leupold Mk 4 3.5-10x (67940) Nightforce NXS 2.5-10x24mm FC-2 w/ZeroStop Nightforce NXS 3.5-15x50mm MIL-DOT w/ZeroStop S&B 3-12x50mm (M8541) Leupold Mk 4 3.5-10x (51850) Leupold Mk 4 3.5-10x (51850) S&B 1.1-4x PM ShortDot
Leupold Mk 4 3.5-10x (51850) AN/PVS-27 night vision (MUNS)
Scope rings Badger 306-29 (30mm) SEI 7008 (30mm) Nightforce A118 (30mm) Nightforce A107 (30mm) Badger 306-75 (34mm) Leupold 61049 (30mm) Leupold 61049 (30mm) LaRue LT-139 (30mm – Lever)
Scope mount Sage M14SCSB SEI 2006 Larue LT-608 NSWC Crane SEI 2006 Sage M14DCSB Sage M14DCSB LaRue LT-139 (30mm – Lever)
Bipod Harris 1A2-BRM Harris 1A2-BRM Tangodown ACB-4 FDE Atlas BT10 or BT10-LW17 Harris S-BRM Harris 1A2-L Harris 1A2-L Harris S-BR or S-BRM
Bipod adapter KAC 98060 KAC 98060 - - KAC 98060 KAC 98060 KAC 98060 LaRue LT-130 (Lever)
Sling Buffer Tech. TAS-M14 Buffer Tech. TAS-M14 Eagle Ind. FNH-ESS 1.25-DEB M60 Sling (1005-00-312-7177) Buffer Tech. TAS-M14
Magazine count 2 2 5 6 7
Transport case Eagle DC-M14 Pelican iM3300-X0000 and Eagle DC-M14-EBR-KH Pelican 1750-000-110
Multi-tool Bondhus 67255281 Bondhus 67255281 Bondhus 853485 (and 736540?) Bondhus 784285 Bondhus 13026063 Bondhus 13026063 Bondhus 67255281
Other components Falcon/ERGO 4373CB Falcon/ERGO 4373CB Trijicon RMR 4MOA X-Treme V2 EBR trigger shoe SPA Defense SIMRAD B0634 Sage M14SCSB
SEI trigger parts kit (2060) Wilcox red-dot mount (35101P01) BFG RMFL-125 sling mount (2) KMW Pod-Loc (875) Falcon/ERGO 4373CB
SEI Op rod spring Magpul CTR FDE Sage PMRI-FR
Magpul PTS CTR 1.25" riser FDE Falcon/ERGO 4373BK
Tangodown BP-4 FDE (2) Caldwell blind bag (247261)
Tangodown BP-4K 2PANEL FDE



While the Naval Surface Warfare Center Crane Division creates the military Mk 14 Mod 0 and Mod 1 rifles, Sage International was contracted to provide the weapon's chassis-type stock.


The civilian version created by Smith Enterprise Inc. is also known as the MK14 SEI. The Sage EBR chassis stock is available in a carbine variant known as the M14ALCS/CV. The carbine variant is also known as the MK14 SEI Mod 1.[20]

Others include Fulton Armory, firing in semi-automatic mode instead of fully automatic.

Troy Industries has created a replica of the EBR's modular system made by Naval Surface Warfare Center Crane Division called the Troy Modular Chassis System, which can be used by mounting any functioning M1A or M14 rifle on the MCS. Philippine arms company FERFRANS has created their version of the Mk 14 Mod 0 called the FERFRANS SOPMOD M14/M1A Enhanced Battle Rifle, which uses a Sage International M14/M1A EBR Tactical Stock System aluminum chassis, an M4 buttstock, and a GRSC M4-62 General Purpose Combat Recticle.[21]



Non-state actors

See also


  1. ^ "M14 7.62mm Enhanced Battle Rifle (EBR)". p. 219. Archived from the original on 2014-07-24. Retrieved 2017-02-26.
  2. ^ فرقة المعتصم (17 June 2017). "لواء المعتصم- معسكر_المهام_الخاصة3 مميز ولأول مرة في الجيش السوري الحر تدريب برمائي" – via YouTube.
  3. ^ "US Mk 14 EBR allegedly seized by Jabhat al-Nusra in Syria - Armament Research Services".
  4. ^ a b c MK 14 Mod 0 Retrieved on May 29, 2010.
  5. ^ a b Neville, Leigh (2016). Modern Snipers. Bloomsbury Publishing. p. 256.
  6. ^ a b c Modern Firearm's M14 Page. Archived 2010-08-15 at the Wayback Machine Retrieved on September 23, 2008.
  7. ^ The History and Development of the SAGE M14ALCS Enhanced Battle Rifle (EBR) chassis stock system. Retrieved on September 23, 2008.
  8. ^ CRAZY HORSE US NAVY MK14 SEI MOD 0. Retrieved on October 5, 2008.
  9. ^ US Army to Search for New 7.62mm Rifle -, 27 April 2017
  10. ^ Army Plans to Field H&K G28 as New Squad Marksman Rifle. 6 March 2018.
  11. ^ M14SE “CRAZY HORSE” SEMIAUTOMATIC SNIPER SYSTEM (SASS). Retrieved on September 23, 2008.
  12. ^ M14SE “CRAZY HORSE” SQUAD DESIGNATED MARKSMAN (M14SE SDM) AND MK14 SEI RIFLE. Retrieved on September 23, 2008.
  13. ^ Mizokami, Kyle (2019-11-06). "Dead at 1968 Feet: Meet the Newest Sniper Rifle for the Army". The National Interest. Retrieved 2021-07-05.
  14. ^ Gun Digest: Shoot Like a Sniper. F+W Media. 31 March 2014. p. 48. ISBN 978-1-4402-4294-6.
  15. ^ Cutshaw, Charles Q (2006). "New-era M14 alleviates reliability issues". Jane's International Defence Review. 39: 87. ISSN 0020-6512.
  16. ^ a b Brown, Robert K.; Spencer, Vann (13 December 2013). Soldier of Fortune Magazine Guide to Super Snipers. Boulder, CO: Skyhorse Publishing Company, Incorporated. p. 222. ISBN 978-1-62873-541-3.
  17. ^ Neville, Leigh; Carpenter, Shawn (2011). Enduring Freedom: Afghanistan 2001-2010. Osprey Publishing. p. 139. ISBN 978-1-84908-532-8.
  18. ^ Rebecca Parker (March 8, 2010). "Ribbon Cutting ceremony opens new Soldier Weapons Readiness Center at Rock Island Arsenal". U.S. Army.
  19. ^ Thompson, Leroy (2014-10-21). The M14 Battle Rifle. Osprey Publishing. p. 67. ISBN 978-1-4728-0255-2.
  20. ^ MK14 SEI MOD 1. Retrieved on October 5, 2008.
  21. ^ "FERFRANS SOAR Select-Fire SBRs and Carbines, and GRSC Combat Rifle Scope (CRS) at the Range". 2007-07-21. Retrieved 2008-09-23.
  22. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2015-05-15.CS1 maint: archived copy as title (link)
  23. ^ Hetherington, Andrew (3 February 2011). "Extreme Peril". Army News (Australia). Retrieved 9 June 2011.
  24. ^ Vining, Miles (April 22, 2017). "ISOF Arms & Equipment Part 2 – Precision Rifles".
  25. ^ Mizokami, Kyle (9 March 2018). "U.S. Army Squads Getting New Marksman Rifles". Popular Mechanics.
  26. ^ Smallwood, Michael (2015-08-11). "United States Mk 14 EBR in Syria". Armament Research Services. Retrieved 2021-07-05.
  27. ^ Gibbons-Neff, Thomas (September 7, 2017). "An old American rifle gains prominence in Islamic State propaganda footage". The Washington Post.