U.S. Special Operations Command (SOCOM) is about to kick off the search for what it is calling a Flyweight Assault Machine Gun (FAMG). This will be a new 5.56x45mm caliber belt-fed machine gun to succeed the Mk 46, a lightweight special operations-specific cousin of the M249 Squad Automatic Weapon (SAW).
Lt. Col. Alan Wood, SOCOM’s Program Manager for Special Operations Forces (SOF) Lethality, touched on the FAMG briefly in an exclusive interview with TWZ‘s Howard Altman during the annual SOF Week conference last week. Readers can find the bulk of the interview here.
There are “three separate machine gun programs within SOCOM: Lightweight Machine Gun-Medium, Light Machine Gun-Assault, and soon to be FAMG, which is the Flyweight Assault Machine Gun,” Wood explained. “The Medium is your .338 [Norma Magnum], the Assault is your 7.62 NATO [7.62x51mm], and then the FAMG is a 5.56[mm]. All belt-fed machine guns.”
We subsequently reached out to SOCOM for more information about the FAMG, an effort that does not appear to have been previously disclosed.
“The Flyweight Assault Machine Gun (FAMG) will be a 5.56mm belt fed weapon that will replace the MK46 Light Machine Gun,” a spokesperson for the command told us. “Details on the requirement will be published on SAM.gov in the near future.”
While we do not know yet what SOCOM is looking for specifically in the FAMG, beyond its caliber, we do know what the command wants to replace. The Mk 46 traces back to the early years of the Global War on Terror. It is based on the M249 SAW, which is itself a version of the Minimi light machine gun from Belgian gunmaker FN (and later its American subsidiaries).
FN had initially developed what it called the Special Purpose Weapon (SPW), a significantly lightened version of the Minimi with a shortened barrel that also had a thinner profile. The gun, which was marketed heavily toward special operations forces, featured the collapsing stock that had already been used on short-barreled ‘paratrooper’ versions of the Minimi and the M249, as well.
The standard Minimi design also has a secondary magazine well that allows it to fire ammunition from NATO-standard box magazines like the ones used with AR-15/M16-series rifles, as well as belts. This feature was carried over to the M249. It was omitted on the SPW to further cut weight.
The baseline Mk 46 Mod 0 was a direct evolution of the SPW concept. It most notably used the polymer buttstock found on standard Minimi and M249 light machine guns, which is fixed in length, but also lighter than the collapsing paratrooper type. It also came with a new handguard with rails on four sides for optics, laser aiming devices, lights, and other accessories. The handguard design is very tall on the top side to bring in line with an additional rail on the gun’s top cover.
An improved Mk 46 Mod 1 variant was subsequently developed, which “incorporates improved receiver pins, a feed tray with retention pawls and a vented hand guard with improved heat shield and three MIL-STD-1913 rails,” according to the entry on FN America’s website at the time of writing. “The MK 46 MOD 1’s cold hammer-forged MIL-SPEC barrel has a hard-chromed bore for longer life and improved accuracy, and serves as the mounting point for the carry handle.”
To make a more direct comparison, the Mk 46 Mod 1, with its 16.3-inch barrel, weighs just under 15-and-a-half pounds empty with no accessories, per FN America. The version it shows on its website currently does also has a more traditional handguard configuration. A current-generation M249 with a full-length 20-and-a-half-inch barrel tips the scales at 17 pounds without any ammunition, optics, or other attachments.
After years of the U.S. military, including SOCOM, increasingly moving away from 5.56x45mm in favor of calibers that offer longer reach, for rifles and machine guns, there is something of a question as to why the command is now pursuing the FAMG. It had already been relatively rare to see variants of the Mk 46 in actual operational use. For decades now, U.S. special operators have also been using a succession of lightweight 7.62x51mm machine guns, as well, including compact versions of the M60 and a derivative of the Minimi/M249 designated the Mk 48. The aforementioned Light Machine Gun-Assault is a replacement for the Mk 48.
The U.S. Army is also moving to replace at least a substantial portion of its standard M249s with new 6.8x51mm caliber M250 machine guns, which might also make their way into service elsewhere across the U.S. military. The 5.56x45mm M27 Infantry Automatic Rifle (IAR) has also largely supplanted the M249 in the U.S. Marine Corps.
All this being said, U.S. special operators routinely conduct missions in close-quarters environments where the added firepower of a belt-fed machine gun can be beneficial, but the added range offered by a heavier design is not necessary. A design that cuts as much weight as possible is very attractive to fast-moving special operations teams that typically use belt-fed machine guns for brief periods of suppressing fire, as well.
SOCOM is now separately pursuing new hypervelocity 5.56x45mm ammunition that could significantly extend the reach of weapons chambered in that caliber as part of an effort called the Hypervelocity Improved Carbine (HICAR).
In addition, there is value in having commonality in ammunition with other existing rifles and machine guns, as well as those in use with allies and partners. The latter point is especially relevant for special operations forces, which are often forward-deployed alongside their foreign counterparts in locales where access to traditional supply chains is not guaranteed. There are training benefits to being able to use more readily available, less specialized, and often less expensive ammunition, as well.
SOCOM Lt. Col. Wood highlighted all of this while speaking more generally during his interview with us last week:
“So, HICAR’s got me excited. Back in the late teens, the Army went down this higher velocity [route], and I’m intentionally using the word velocity and not pressure in what they’ve done with the M7 and M8 rifles. They’ve been able to increase the velocity and therefore create a flatter shooting rifle as well as a rifle that has greater energy on target, and that does incredible things for barrier defeat in a lot of situations. Now we’ve had 10 years, almost, for that technology to mature, people have learned things, and the question then becomes, what could we do for special operators in calibers that are not new?”
“The advantage for SOF [special operations forces] operators is I’ve got, say, the Green Berets who do a lot of partnering with foreign SOF operators, but there’s no [6.8mm] ammo running around central Africa, or you know, pick your favorite spot where we like to do partnering operations around the world. But there’s a lot of 5.56mm and other common cartridges of that nature, and so what we want to…achieve is maybe not the same effect as what the Army’s done with the M7 and the M8 and that high-velocity ammunition that they have, but where could we get close to that in 5.56 and potentially other calibers in the future.”
5.56x45mm could turn out to be just the baseline caliber for FAMG, too. SOCOM has long had a fondness for guns with interchangeable calibers, allowing for different cartridges to be used as appropriate for specific missions. As a tangential example, the command just recently confirmed to TWZ‘s sister site Task & Purpose that its new Mid-Range Gas Gun-Assault (MRGG-A) rifles, now also designated the Mk 24, will be able to be configured to fire either 6.5mm Creedmoor or 7.62x51mm.
It is also worth noting that the U.S. Army’s elite 75th Ranger Regiment has already begun using the 5.56x45mm Light Assault Machine Gun (LAMG) from Knights Armament Company (KAC), at least on a limited level in recent years, alongside current-generation versions of the M249. KAC’s website presents a typical LAMG configuration featuring a 15-inch barrel and weighing 11.4 pounds empty, which is more compact and lightweight than the Mk 46.
The LAMG also has what is known as a “constant recoil system,” which is designed to significantly reduce felt recoil and, by extension, improve accuracy during sustained autonomous fire. KAC says this makes the gun “more controllable than other similar machine guns that weigh nearly twice as much.”
There are other 5.56x45mm machine guns on the market today, which could be adaptable to meet the FAMG requirements, as well. This includes FN’s own newer EVOLYS design, which is available in 5.56x45mm, as well as a variety of other calibers.
As SOCOM has said, more details about its requirements and plans for the FAMG are set to come soon.
Contact the author: joe@twz.com
The post Search For New 5.56mm “Flyweight” Special Operations Machine Gun To Kick Off Soon appeared first on The War Zone.
