Posted on 03/08/2011 11:47:32 AM PST by King_Corey
The M14 Enhanced Battle Rifle The changing nature of the war in Afghanistan led to the re-issue of the 7.62x51 mm NATO M14 rifle. By Maj. John Plaster, U.S. Army (Ret.) Not long after U.S. forces invaded Afghanistan, al-Qaeda and its Taliban allies came to realize that Americas 5.56x45 mm NATO infantry rifles lost most of their lethality beyond 500 meters. Demonstrating their adaptability, the insurgents exploited Afghanistans sprawling valleys and distant mountainsides to seek engagements beyond the M16s and M4s effective ranges.
This is borne out by U.S. Army data, which reveals that more than half of the wars small arms engagements are now beyond 500 meters, with the enemy employing heavier weapons and then withdrawing before air support or artillery fire can arrive.
One solution, military planners could see, was employing a more capable cartridge already in the system: the 7.62x51 mm NATO. Todays standard U.S. sniper cartridge, the 175-grain, M118 Long Range load, delivers four times the foot-pounds of energy as the standard 62-grain, 5.56 mm round at extended ranges. In other words, at 600 meters the 7.62 mm round packs about as much energy1,000 ft.-lbs.as the 5.56 mm round at 100 meters.
Although M14 rifles were pulled from depot storage, fitted with scopes, shipped to Afghanistan and issued to Army and Marine designated riflemen, the guns proved less than ideal for todays warfare. First, their fixed stocks could not be adjusted to fit the length-of-pull needed for todays body armor. And second, the 40-year-old rifles could not accommodate modern accessories such as lasers, night vision scopes and lights, which require MIL STD 1913 Picatinny rails. Fortunately, a solution had already been developed by the U.S. Navys Surface Warfare Center at Crane, Ind.
The SEAL CQB Rifle One year before the 2001 terrorist attacks, U.S. Navy SEALs had gone to Crane to request an updated version of the 42-year-old M14. Great believers in the M14s reliability and the 7.62x51 mm NATO cartridges lethality, they wanted a shortened version with a pistol grip and adjustable-length buttstock for close-quarters use.
The design task fell to David Armstrong, an accomplished small arms engineer who previously had developed the well-received SOPMOD (Special Operations Peculiar Modification System) for the M4 carbine. A mechanical engineer, machinist and recreational shooter, Armstrong began by searching for an off-the-shelf collapsible buttstock.
After trying several, he chose a Sage Intl collapsible, pistol-grip stock made for the Remington Model 870 shotgun. The telescoping design offered five lengths of pull, in 1-inch increments, that worked well with body armor. Armstrong connected the Sage buttstock to the forward section of a modified M14 fiberglass stock. He also replaced the rifles standard 22-inch barrel with an 18-inch unit, reducing its overall length by nearly 10 inches, to 35 inches.
The fiberglass stock, however, did not satisfy him. The [M14] design has always been tough to beat for reliability, but required laborsome bedding and tuning for best accuracy, he explained. Earlier sniper versions of the M14, especially the M21 Sniper System, which used a resin-impregnated stock with epoxy bedding, proved so temperamental that snipers were instructed not to remove the action from the stock while cleaning it.
Armstrong took the bold step of designing his own chassis stock, machined from aircraft-grade aluminum. Not only would this be more rigid than fiberglass, but it would include an aluminum bedding block and an assortment of Picatinny rails for optical and illumination accessories. The result was a true drop-in stock, requiring no bedding or special fitting. This stock floats the gas system through a replacement operating rod guide screwed to the rigid stock fore-end and a simple spacer replacing the front band, he said. He also modified the Sage buttstocks cheek rest to give it 2 inches of vertical adjustment in 1/4-inch increments.
In addition to installing quad Picatinny rails around the fore-end, he attached a short-rail scope mount that replaced the M14s stripper clip guide. The final additions were a more effective flash suppressor, three ambidextrous 1 1/4-inch sling slot locations, and a Harris Engineering S-LM Series S bipod. Patented to the U.S. Navy with Armstrong as its inventor, the chassis stock is now produced under license by Sage Intl in Oscoda, Mich.
Simply adding the chassis stock system cut the group size of a basic M14 in half without the need for glass-bedding, he reports. Firing five-shot groups with M118 ammunition at 600 yards, Naval technicians at Crane recorded 2 to 2.5 minute-of-angle (m.o.a.) extreme spreadsmeaning 12 to 18-inch groups. Standard M80 ball ammunition shot nearly as well.
The EBR & EMR When the U.S. Army and Marine Corps later sought modernized M14s, Armstrong merely switched the Navys Mk. 14 Mod 0 rifles short barrel for a full-length 22-inch version to create the Armys Enhanced Battle Rifle (EBR) and the Marines M39 Enhanced Marksmans Rifle (EMR). These versions measure 38.5 inches overall, with the stocks collapsed, and 45 inches when fully extended.
Although 3 pounds heavier than the standard M14, the EBR and EMR compare favorably to Americas current 7.62 mm sniping platforms, such as the Armys M24 and M110, and the Marine Corps M40A3. The Army is issuing two EBRs per infantry squad, while the Marines have placed the EMR at platoon-level.
The Army EBR is fitted with a Leupold 3.510X scope, and the USMCs EMR optic is the Schmidt & Bender M8541 Scout Sniper Day Scope, the same scope used by Marine snipers. Thus equipped, these designated riflemen have the ability to engage enemy personnel to 800 meters.
Each service is now building its own rifles, with Navy Mk. 14 Model 0s being produced at the Crane facility, while Army rifles are assembled at Rock Island Arsenal, Ill., and the USMC version at Marine Corps Base Quantico, Va.
Some 5,000 EBRs have been produced at Rock Island Arsenal, with funding for another 1,200. A further 2,000 Sage stocks have reportedly been sold directly to military units and individuals for conversion of M14s. Still more rifles issued to Marines and SEALs suggest that perhaps 10,000 of these modernized M14s are now in service.
Firing The EBR Thanks to Fulton Armory of Savage, Md., I was able to test fire a platform nearly identical to the EBR. Available to civilian shooters, this semi-automatic-only rifle incorporates Fultons own M14 Receiver, installed on the same Sage Intl chassis stock that David Armstrong designed.
Examining the rifle in my shop, I found that its military two-stage trigger broke cleanly at 3 pounds, 7.5 ouncesabout perfect for me. For test-firing, I mounted a Bushnell Elite 6500 4.530X Tactical Scope, which was a simple task with the rifles Picatinny rails.
Ergonomics had concerned me because of the stocks square edges. Nonetheless, I found its balance and heft surprisingly good with the center-of-balance at the magazine well. Having trained on the M14 in the 1960s, I already appreciated the reliability of its gas piston and operating rod system, and the actions resistance to sand and carbon buildup. Of course, I experienced no stoppages or malfunctions of any kind.
Weighing 14 pounds with a scope, a bipod and a loaded 20-round magazine, this weight plus the straight-line stock resulted in a mild recoil push, making it very comfortable to fire. This also assisted target reacquisition for follow-up shots.
The basic difference between the military EBR and Fulton Armorys version is a National Match barreland that really showed on the range. Accuracy with the Fulton Armory EBR was impressive. Firing off sandbags at 100 yards, my Federal Gold Medal Match, .308 Win., 168-grain ammunition punched a three-round group measuring 0.721 inches. Switching to the U.S. militarys load specifically designed for snipingthe 175-grain, M118 Long Range roundthe rifle fired even better, scoring a 0.50-inch three-round group.
In the hands of a trained marksman, the EBRespecially with a National Match barrelis more than capable of dealing with insurgents to 800 meters and beyond. Perhaps the Taliban and its allies have proven adaptable; but, as demonstrated by these 21st century M14s, so have we.
As long as firearms are stil being used, I don’t see the .30-06 ever being outdated.
While no small arms cartridge is truly ballistically perfect, the .30-06 and the 7mm Mauser are about as close as humans are likely to get.
Yeah, I have both and the difference is obvious.
I imagine they have the jigs & fixtures, though, and can ramp up mfg to mil spec pretty quickly.
FYI -
Thread related to our discussion of yesterday.
Robert Strange McNamara also made a terrible decision when he ordered the closing of the Springfield National Armory, and forced D.O.D. to use private companies to develop our future infantry small arms.
For years now, we have been relying on Beretta, FN, S.I.G., and HK. It seems like U.S. industry is good at big-budget programs, like aircraft, tanks, and missiles. But we no longer take the lead in small arms development.
Not exactly the same. Here is a link that gives great details on the differences.
The Marines and Army are procuring the Knight's Armament Co. M110 Semi-Automatic Sniper System (SASS). This is an update of the Stoner AR-10 in 7.62 NATO. The M110 SASS is derived from the KAC SR-25 precision rifle and the Navy SEAL’s Mk 11 Mod 0/1 sniper's rifle.
Also, the Army is upgrading all in-house M24 Sniper Weapon System (SWS) to the M24A1 in .300 Win Mag. The Marines are updating all M40 Sniper's in-house to the M40A5 configuration in 7.62 NATO. The M24 and M40 are bolt actions; all other sniper rigs are self-loaders.
There's lots of good bolt and self loader rifles around. The M14’s have also been refurbished into outstanding sniper rifles: Mk 14 Mod 0/1; M14 DMR; M14 SE and SEI, M14 SOCOM I and II, M14 EBR.
Yep.
SR-25/Mk11 Mod 0
Much better, in every way, than the M-14 ever was or ever will be.
More reliable.
More accurate.
I see A LOT of shooters upgrading M1A rifles (not real M-14s) with the new chassis and stock systems, but none match up to the SR-25.
Supposedly the Aussie in Nam carried FAL-FN’s with .308 and the NVA and Viet Cong avoided picking picking fights with them.
I was shooting a .308 (7.62 x 51) before I joined the Army in 1965. I was thrilled when they issued me one (M14) and later an M60. When I was just about to get out of the service, they “qualified” me on the M16! I thought then and still think it is a piece of junk for a battle rifle compared to the M14. I’m glad the military is finally seeing the error of its ways. Today, in the civilian world, I still shoot .308. My son, in Iraq, though disagrees with me, hehehehehe!
Very few M-14s are capable of .5 MOA, or ever were.
It takes a lot of tuning to work the M-14 into that condition.
I have wondered for a long time how well an M-16 with a 24 inch barrel would do. You could leave off the flash hider and the overall length would not be that much more.
Adding a lot of velocity to those heavy .223 bullets would make them effective at long range. I know they penetrate well with just the standard M-16 barrels.
One could compromise and make it 22 inches with no flash hider and it would be about the same oal.
That would be...an M14.
Exactly! That is exactly what an M14 was to meant be. Shorter action, full auto fire capability, lighter weight, quick change 20 round magazine, basically the same ballistics. In other words - a modified M1 Garand and a BAR/Garand combo.
Get the AR.
Cheaper to shoot (train) and more useful for likely applications. Everybody dreams about the 1000m shot because they don’t want to think about the 100m “up close” fight.
I used a M14. I got to where I could tear it down, clean, re assemble is less than 3 minutes. Great mud hole gun. The M16 sucked......
That would be the SCAR SSR (sniper support rifle) variant:
I can’t think of a single thing wrong with ANY of the companies you listed. My only complaint is that Glock isn’t on the list (yet). ;)
How many good men were lost in Vietnam before the gas ports in the early M-16s were re-engineered so that the durned blamed things didn’t need to be kept almost showroom clean?
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