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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 it 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’s 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

Route 66 was 20 years old and World War II had just ended when Bobby Troup, an aspiring songwriter from Pennsylvania, decided to go west. As it turned out, that drive in early 1946 did more than anyone could have imagined to establish the road as a symbol of footloose American freedom.

Stories, photos and travel recommendations from America’s Mother Road

Troup, 25 at the time, had already earned an economics degree from the University of Pennsylvania, written a hit song (1941’s “Daddy,” sung by Sammy Kaye), worked for bandleader Tommy Dorsey and served as a Marine through the war years. But to restart his career as a songwriter and actor, he believed that he needed to be in Los Angeles. So he and his wife, Cynthia, pointed their 1941 Buick toward California.

They started on U.S. 40, then picked up Route 66 in Illinois. Along the way, as Troup told author Michael Wallis in the book “Route 66: The Mother Road,” Cynthia came up with a phrase she thought was songworthy.

Bobby Troup, composer of the hit song “Route 66” and grand marshal of Duarte, Calif.’s Salute to Route 66 parade, rides in a 1948 Buick convertible and waves to fans in 1996.

(Louisa Gauerke / Associated Press)

“Get your kicks on Route 66,” she said.

Troup took it from there, creating “a kind of musical map of the highway.”

As Troup later recalled in an introduction to a Route 66 book by Tom Snyder, they heard Louis Armstrong play a club in St. Louis, stopped at Meramec Caverns in Missouri and found that “a good part of the highway was absolutely miserable — narrow, just two lanes, and very twisting through the Ozarks and Kansas.” Then came a snowstorm in Texas.

By the end of the drive, the up-tempo tune was half-done. Then, not quite a week after arrival, Troup landed a chance to pitch a few songs to Nat “King” Cole, who had already won fame with hits including “Sweet Lorraine” and “Straighten Up and Fly Right.”

They were sitting by a piano on stage — after Cole’s last set of the night at the Trocadero on Sunset Strip — when the nervous young songwriter decided to share his unfinished road song.

“I got up on the riser, pulled the piano bench back a little bit — and it went over the side and I fell over backwards,” Troup confessed in a later interview.

Still, Cole “loved it,” Troup recalled. “As a matter of fact, he got on the piano with me and played it.”

This was February. By mid-March, the song was done and Cole was recording it in a studio on Santa Monica Boulevard, part of Route 66.

The finished version name-checked a dozen cities along the route, including these words:

Now you go through Saint Looey

Joplin, Missouri,

And Oklahoma City is mighty pretty.

You see Amarillo,

Gallup, New Mexico,

Flagstaff, Arizona.

Don’t forget Winona,

Kingman, Barstow, San Bernardino.

Won’t you get hip to this timely tip

When you make that California trip

Get your kicks on Route 66.

In April, Capitol Records released “(Get Your Kicks on) Route 66” and the tune quickly rose to #11 on the Billboard chart of top-selling singles. Before 1946 was out, it had been recorded again, this time by Bing Crosby with the Andrews Sisters. That version went to #14.

Musicians Nat “King” Cole, left, and Bing Crosby, circa 1945.

(NBC / NBCU Photo Bank / NBCUniversal via Getty Images via Getty Images)

Coming just as postwar America was rediscovering leisure travel, the song was a big hit — and for many, a painful irony. Even with guidance from the Green Book used by many African American travelers in those days, it would have been deeply risky — and illegal in some places — for any Black man, Nat King Cole included, to eat and sleep on Route 66. This was a year before Jackie Robinson integrated baseball’s major leagues, two years before the U.S. Army was integrated.

As Candacy Taylor puts it in her 2020 book “Overground Railroad: The Green Book and the Roots of Black Travel in America,” “the open road wasn’t open to all.” Into the 1950s, Taylor writes, “about 35% of the counties on Route 66 didn’t allow Black motorists after 6 p.m.” and six of the eight states on the route still had segregation laws. Cole may have helped sell Route 66, Taylor writes, but “the carefree adventure he was promoting was not meant for him.”

Documentary photographer Candacy Taylor at the New Aster Motel in Los Angeles in 2016. In her book “Overground Railroad,” she writes about the discrimination Black travelers faced while driving on Route 66.

(Brian van der Brug / Los Angeles Times)

Two years after recording the song, when the increasingly wealthy Cole and his family bought a Hancock Park mansion and became the neighborhood’s first Black homeowners, many neighbors tried to keep him out, poisoned the family dog and burned racist insults into his lawn.

The Coles stayed put. The family was still in that home on South Muirfield Road in 1956, when Cole became the first African American to host a network television show, and in 1965, when Cole died of cancer at 45.

Troup, who later was divorced from Cynthia and married singer/actor Julie London, went on to record more than a dozen albums and had other songs recorded by Little Richard and Miles Davis. As an actor, Troup filled many guest-star roles on television, played Dr. Joe Early on the 1970s TV show “Emergency!” and had a small part in Robert Altman’s 1970 film “MASH.”

Meanwhile, the song kept rolling. As years passed, Perry Como, Sammy Davis Jr., Chuck Berry, the Rolling Stones, the Manhattan Transfer, Michael Martin Murphey, Asleep at the Wheel, Buckwheat Zydeco, Depeche Mode, Glenn Frey, the Brian Setzer Orchestra and John Mayer recorded versions. At different points in the 2006 movie “Cars,” you hear Berry’s and Mayer’s versions. Troup, who died in 1999, never forgot the difference the song made, both in his life and the way people think about the road.

“On the basis of that song, I was able to go out and buy a house and stay in California,” Troup told Wallis. “I never realized when I was putting it together that I was writing about the most famous highway in the world. I just thought I was writing about a road — not a legend.”

The Rolling Stones are among the countless musicians who have recorded versions of “Route 66.”

(David Redfern / Redferns via Getty Images)

Marco Reus scored two goals, the second one on a penalty kick in the 85th minute, to rally the Galaxy to a 2-1 victory over Real Salt Lake on Sunday.

Reus scored from 21 yards out off a free kick to give the Galaxy a 1-0 lead in the ninth minute. The kick was awarded after Gabriel Pec was fouled by Real Salt Lake midfielder Stijn Spierings.

Galaxy goalkeeper JT Marcinkowski was charged with an own goal in the final minute of stoppage time, tying it 1-1 at halftime. The ball deflected off the post and into the net when he dove to make a save on Zavier Gozo’s shot.

Reus scored the winner on a PK after a foul on Sam Junqua for shoving Elijah Wynder in the back on a corner kick. It was the fourth goal this season for Reus and his 10th in 37 career appearances.

Marcinkowski saved nine shots for the Galaxy (3-4-3).

Rafael Cabral totaled four saves for Real Salt Lake (5-3-1).

Real Salt Lake went 5-0-1 in a six-match stretch before losing 2-0 to visiting Inter Miami on Wednesday. The club falls to 1-2-1 on the road.

The Galaxy were coming off a 1-1-1 road trip and improve to 2-2-1 at home.