History

The United States Navy Mark 14 Enhanced Battle Rifle (EBR) is an American selective fire military rifle chambered for the 7.62x51mm NATO cartridge. It is a variant of the M14 battle rifle and was originally built for use with units of the United States Naval Special Warfare Command, such as the United States Navy SEALs. The EBRs are made with the intention of carrying out both designated marksman and CQB roles in combat. Since 2010, the U.S. Army has made available two M14EBR-RI rifles per infantry squad for units deploying to Afghanistan. The M14EBR-RI has a standard weight 22.0" barrel and lugged GI flash hider, it is not to be confused with the MK14 Mod 0 or Mod 1.

The creation of the Mark 14 Mod 0 Enhanced Battle Rifle (EBR) began in 2000 after a request by United States Navy SEALs for the creation of a more compact M14 battle rifle. In 2001, Mike Rock Rifle Barrels, Inc. 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 Mark 14 Mod 0 rifle, with details that include a collapsible stock that was requested for the new rifle and with 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 has excessive noise problems.
 

In 2003, Ron Smith and Smith Enterprises Inc. created its own version of the M14 Enhanced Battle Rifle (MK14 Mod 0 type SEI), which used a medium heavy weight 18.0" barrel and was more widely favored than the rifle made by Rock and Ribordy. The Smith Enterprises-based MK14 was then used as a basis to eventually create the Mark 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 forces to be armed with the EBR in 2004, followed by the US Coast Guard. The United States Army is also being armed with the M14EBR-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 also considering the EBR, but wound up instead developing the M39 Enhanced Marksman Rifle.
 
 
The weapon takes the standard M14 action and replaces the standard barrel with an 18.0" barrel, The barreled action is then bolted into a telescoping chassis stock system, with a pistol grip, a different front sight, Harris bipod, four Picatinny accessory rails (which surround the barrel), and a more effective flash hider in place of the standard lugged USGI flash suppressor. 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 as standard external accessories, though they are almost always replaced with a vertical foregrip and magnifying scope for better handling and for use in a designated marksman role. A Wind Talker suppressor can be mounted on the DC Vortex flash hider, 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 former being selected, which was then shown at the SHOT Show in Orlando in 2003.
 

 
Several configurations are allowed on the Mark 14 Mod 0 rifle, among them include the attachment of the AN/PVS-4 night vision scope. Others had included the capability of adding two different scopes/sights on the Picatinny rails, for more precision or zoom level.

 
While the Naval Surface Warfare Center Crane Division creates the military Mark 14 Mod 0 and MK14 Mod 1 rifles, Sage International was contracted to only do the weapon's chassis-type stock.
 

 
The civilian version created by Smith Enterprise Inc. is also known as the MK14 Mod 0 type 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 Mod 1. The MK14 SEI Mod 1.
 
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. Ferfrans has created their version of the Mark 14 Mod 0 called the Ferfrans Enhanced Battle Rifle.

Singleplayer/Spec-Ops

Multiplayer

The MK14 is unlocked at Level 60 in Modern Warfare 3's multiplayer. It does have a low rate of fire, but it has high power, as it kills with two hits to the chest or one headshot. The recoil is very controllable compared to the M14 from Call of Duty 4: Modern Warfare, especially when combined with the Kick proficiency.

Attachments

Attachments	Challenges	Icon
Reflex Sight	Get 60 kills while looking through a Red Dot Sight attached to a Assault Rifle.
Silencer	Get 15 kills with a Silencer attached to a Assault Rifle.
Grenade Launcher	Get 20 kills with a Grenade Launcher attached to a Assault Rifle.
ACOG Scope	Get 20 kills while looking through a ACOG Scope attached to a Assault Rifle.
Rapid Fire	Get 40 kills with Rapid Fire attached to a Assault Rifle.
Heartbeat Sensor	Get 40 kills with a Heartbeat Sensor attached to a Assault Rifle.
Hybrid Sights	Get 40 kills with a Hybrid Sights attached to a Assault Rifle.
Shotgun	Get 40 kills with a Shotgun attached to a Assault Rifle.
Holographic Sight	Get 40 kills while looking through a Holographic Sight attached to a Assault Rifle.
Extended Mags	Get 40 kills with Extended Mags attached to a Assault Rifle.
Thermal	Get 40 kills while looking through a Thermal attached to a Assault Rifle.

Proficiencies

Proficiency	Description	Icon
Kick	Kick Reduces recoil by 20%, allowing for steadier full-auto and faster recovery from shots.
Impact	Impact grants maximized penetration for any weapon. This is especially powerful on Assault Rifles and SMGs, as LMGs already have strong penetration, and Sniper Rifles are difficult to use for intentional walling shots.
Attachment	Allows the use of 2 Attachments. It is a solid all-around Proficiency, useful in many situations. This Proficiency is also notably useful for stealth builds, as it allows you to use a Silencer alongside any other Attachment. The Attachment Proficiency is also helpful if you are still getting comfortable with iron sights, as it allows you to take and optical Attachment and a second utility Attachment.
Focus	Reduces visual recoil by 50% when you are hit. Focus is very effective for SMGs and Shotguns. It is also helpful for ARs, as it can keep your shots on target when you enter a heads-up one-on-one firefight.
Breath	Allows you to remove the slight sway from Assault Rifles by holding your breath. Very situational, most useful with the Type 95, M16A4 or MK14 with a long-range sight fitted. Breath can be used with automatics, as well, for careful long-range burst-fired shots, though the benefit is small.
Stability	Reduces idle sway by 25%. Consider this to be an 'automatic' Breath for long-range combat. It is most useful on LMGs, as they need the enhanced accuracy for long-range shots, though ARs also benefit from it.

Challenges