This machinegun was a game-changer during the Vietnam War. It was carried my many, loved by most, and hated by some, but got the job done. Learn more about this great weapon in my article this week.
Using a mash-up of technology garnered from WWII, the US military selected a compromise general-purpose machine gun in 1957 that remains in limited service to this day. This gun, officially known as the M60, has been carried my many, loved by most, and hated by some. No matter which one of these categories a soldier fell into though, they all called it ‘the pig’.
WHY THE M60?
A ‘Pig’ gunner reader for just about anything.
In the late 1950s, the US Army was in the process of converting its arsenal from the tried and true .30-06 round (that had gotten it through both World Wars and Korea) to the shorter and more controllable 7.62x51mm NATO cartridge. The first step? Replace its WWII era small-arms with more modern equipment to shoot this new round. The vaunted M1 Garand and M1 Carbine were to be replaced by the M14 battle rifle. Then there was the 19-pound Browning M1918 BAR, a myriad of submachine guns, and the 31-pound M1919 Browning Light Machine gun that needed a replacement. The 1950s replacement for all of them was to be the M60.
DESIGN
M60 diagram with tripod and bipod.
After WWII, the US military took careful stock of captured German and Japanese weapons systems. From the bad ones, they learned what not to do. From the good ones, they learned what to copy. From the German FG42 light machine gun, they copied the overall layout, bolt, and gas piston system (which in itself was ironically an improvement of the WWI era US Lewis gun). From the MG42 (which was known as Hitler’s buzzsaw due to the high rate of fire) they borrowed the top cover and belt feed unit. When these features were put together in a full-auto only, a gas-operated, air-cooled, belt-fed, automatic machine gun that fired from the open-bolt position and chambered in 7.62x51mm NATO, it was at first called the T161E3.
The original M60 machine gun.
It had a cyclic rate of 550 rounds per minute, similar to the M1919 it was replacing. Using disintegrating link ammunition, the typical gunner would fire six to nine-round bursts with four to five seconds between bursts, which used up about 100-rounds per minute. To keep up the rate of fire the barrel was designed to be changed out once it got too hot and fixed headspace in the gun’s chamber meant that this could be done rapidly. When firing fully cyclic, the 22-inch barrel had to be swapped out every minute.
The overall length of the unloaded gun with a bipod and carrying handle was 43.5 inches and it weighed in at 23.15-pounds, striking a balance larger than the BAR yet still smaller than the M1919. The 15-pound M122 tripod could be fitted to the gun for use in a sustained fire role, like in defense of an isolated outpost.
After a decade long T&D period, the gun was finally adopted and type classified as the M60.
USE
M60 gunner in Vietnam.
Selected by the military in 1957, the M60 was used as the broom to sweep the older M1919 machine guns, M2 and M3 carbines, and even the few remaining Thompson subguns out the door. While some of these guns lived on in secondary roles for a while longer, the M60 was indisputable the new king of the castle. The firsts units that received the gun were Cold warriors holding the line against 50,000 Soviet tanks in Europe but soon enough the weapons were being used in a real live shooting war in a place called Vietnam.
It was in this South East Asian conflict that the M60 did yeomen service. Despite a lot of teething problems (see below), the gun
was used by all branches of the US military in that war. It was used in base defense roles against attack, as flying fire support in the doors of transport helicopters, mounted on vehicles and small boats using spade grips, and, most commonly, toted by gunners assigned to infantry squads.
These soldiers had to hump everything they carried through a tropical rain forest under some of the worst conditions imaginable, earning it the 24-pound M60 the nickname ‘the pig’—but this wasn’t the only reason for the moniker. Combat squad, where most soldiers carried 5.56mm M16s, noticed quickly that the 7.62mm NATO full-auto-only M60 could huff and puff and blow down houses.
M60 in the field in the 1960s with the 101st airborne. Squad members use M16s.
EARLY PROBLEMS WITH ‘THE PIG’
High heat, asbestos mittens were issued to M60 crews to swap out overheated barrels.
For a gun that had such a long development period and was based on such a good design, the M60 had a few, unexpected, even embarrassing problems. The gun had no carry handle on the barrel to remove it with, so gunners were given an asbestos oven mitt to grab the red-hot steel when it needed to be changed out. The thing is, barrel changes were probably only needed in a hot firefight and, in combat, the reality of soldiers “getting their mittens on” didn’t work out real well.
Also, the fire-control assembly was held to the gun with a single spring. If knocked on brush or gear, it could result in the entire trigger group falling out, which did not make it very popular with troops. Worse, the nut that held the gas system to the weapon would back out and fall off in extended firing, which had to be fixed in the field by the use of a—wire hanger. This fix further slowed down barrel changes as each fresh barrel had its own gas system that had to be installed at the same time.
.
Spade drip M60s on Riverine boat in Vietnam. Check out the C-ration cans wired to the left side of the gun to aid in ammo feeding.
The receiver is not one piece, but rather several light metal pieces welded together and attached to a trunnion. After several thousand rounds, these guns were just worn completely out and the receivers would literally stretch to the point of being unserviceable.
One of the most common field upgrades to the M60 was the C-rat can. To eliminate the need of an assistant gunner whose primary job in combat was to keep the belts of ammunition coming, M60 users would wire a C-ration can to the left side of their gun just below the feed way so that the belts didn’t bind up and jam the works.
These problems led to a number of eventual…
UPGRADES AND FIXES
In 1986, the M60E3 was born which, using lessons learned from Vietnam, made a more streamlined gun. This lighter package dropped the weight down from 23 to 18.7-pounds and a vertical forward grip allowed the new gun to be fired from a standing position. The bipod was moved from the barrel to the forearm and a carrying handle was added to the barrel to aide in quick changing. This gun was put into service gradually but the writing was already on the wall.
M60E3. You can tell by the vertical foregrip and the thinner barrel profile.
In 1984, the Army had adopted the Belgian FN Minimi as the M249 SAW for use as a squad weapon. Even though it was 5.56mm and not 7.62, its 17-pound weight was seen as a better fit to help keep the infantry mobile.
By the 1990s, the Belgian FN MAG 58, now type classified as the M240, was phasing out the improved M60E3 and the Navy’s Mk 43 (M60E4). Even though the early M240 models tipped the scales at 27-pounds, they were utterly reliable in tests and required no C-ration cans, coat hangers, or asbestos gloves. A few M60s saw service into Iraq and Afghanistan and continue to haunt armories in spec ops units today, but, without official notice, the pig has been put to pasture by the US military. It is still encountered regularly overseas with US allies and this will most likely continue for decades.
COLLECTABILITY
The M60 was legendary in film and TV over the past half-century. This has made it probably one of the most recognizable belt-fed machine guns in modern history. Heck, the final season of Breaking Bad seems to revolve around an M60 machine gun in Walter White’s trunk.
M60D had spade grips for pintel mounting on ships, vehicles and aircraft.
M60 parts kit.
There are quite a few of these guns floating around out there as Class III weapons, starting at about the $30,000 range, which is comparatively low for belt-fed guns in this country. A few firms such as Desert Ordnance have been making and selling semi-auto belt-fed M60’s for generations, but these often run over $10K. Then of course there are dummy guns made from torched receivers for about $1000. You can also get your own parts kits and take it from there depending on your skills.
If all else fails, one of the most powerful places to see a M60 up close is at the Vietnam veterans Memorial in Washington DC. The bronze statute on the National Mall by Frederick Hart shows three servicemen of the period.
The Three Soldiers Memorial in Washington, D.C. The one on the left is toting ‘the pig’.
This article originally appeared on the website, Guns.com. Here is the direct link: https://www.guns.com/news/2013/05/29/the-m60-machine-gun-and-they-called-it-the-pig
Carried the 60 during my tour with the 25th inf 67/68. I was a small guy and the 60 would hurt your soHoukder when humping. Once the shit hit the fan the cry was 60 man up front- great weapon
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my friend came back and told stories about this gun , and how many he killed using it for a year, he was six foot six 250 lbs man
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I thought it was a great weapon . I used and carried it when i was in the nineth and eight nineth battalions .
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The M-60 would for me, would have been too heavy, to carry a very long distance / way.
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It may be a waste ?
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What difference, does it make ?
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I liked the article about the M-60 LMG. Never heard it called the “pig” until I read the article. In basic at the now closed Fort Ord in CA, we briefly trained on the M-60 to become familiar with it. I saw its use in the Ft Benning Inf Training school. I was a medic with Hq Co 197th Inf Bde out covering live fire exercises. I saw its use in training with the 1/5 Inf Bn 25th Inf Div in HI as a medic assigned to support one of the Inf Companies. Changing of the barrel wasn’t all that common, but it did happen. Saw the use of other weapons in training like the M-203; the 90 mm $35.00 sewer pipe; Cobra; F-4 Phantom; M-79(only in basic) the M-72 Law(only in basic) The M-60A1; the Chaparral Mobile missile carrier; the Vulcan APC; Claymore mines; the intro of TOW; the upgraded 105 field gun(no split trails) 81 mm mortar; 4.2 in mortar; 106 mm recoilless rifles on jeeps before the advent of TOW; M-551 Sheridan tank; APC’s; Huey’s; The dreaded Gamma Goat vehicle (Pain in the ASS!!!); Flame Throwers!
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1957 was, my year to, freely join the U.S. Army. I did that on 7 Oct. 1957.
In June of the previous year, I signed on the line, when I joined the OKLAHOMA National Guard. June 1956, is the year, all Units in the state met up on the, route north of Ft. Hood TXs. Then Convoyed, on to North Ft. Hood. Stayed there for 3 weeks, then returned to our Home Bases.
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Fantastic information how the M 60 was light machine gun used in platoon ops
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For Joseph
I am sure not too many people carried, the M-60 because, of the weight of that weapon was/is heavy for sure. Way too much to handle & be firing at, the same time.
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M-60 machine gunners free-firing from a standing or kneeling positioned was routine. True, they were big guys. And they were very accurate. Free firing was a normal engagement.
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I only have 1 year, in the Nam. That was, enough. My time there began, the 7th of May 1970. The plane landed at Tan San Nuht Airport near, Saigon. 6 months in, my company the 543d T.C. joined with the 572d T.C.
they were right next to us. We then, packed up. Took all of what was packed, to the Port Of Saigon. Then we, boarded planes C-147z at the Airport. Then we flew North and made a Fuel Stop at, Cam Rahn Bay. From there we went airbourne & flew on to a landing zone. Near Quang Tri near the DMZ. We all were transported to a large open field. There we setup a perimeter and dug in. Appx: 6 months later, I departed from there. None of us ever knew, why we were there.
Of course, we all think differently.
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Only 1 Tour for me, was enough.
On Wed, Apr 8, 2020 at 2:06 PM CherriesWriter – Vietnam War website wrote:
> Les Scates, U.S. Army (Ret.) 2tour Nam Vet. commented: “M-60 machine > gunners free-firing from a standing or kneeling positioned was routine. > True, they were big guys. And they were very accurate. Free firing was a > normal engagement.” >
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Had a totally different experience with the M60’s used by the Crew Chiefs and the Gunners on the old “Charlie” model Huey gunships. and the guns really were “pigs” when it came to reliability. Don’t know how many rounds the grunts fired in a day’s mission but it was not unusual for our guys to fire from 2,000 to 3,000 rounds per day per gun – some days even more. It was SOP that when we landed to refuel, if we had been in a good firefight, they changed out the barrels. A normal days load consisted of four barrels per gun per aircraft. But those M60 saved our asses more than once. I’m still amazed how accurate the gunners were and how they could fix a stoppage in a matter of minutes. The Army spent thousands of dollars trying to reduce the stoppage rate, then some GI figured out how to use a C-ration can for an ammo belt guide – half the problems solved.
Welcome home everybody.
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Very interesting piece. I qualified with the M-60 in 1966.
On Sun, Apr 5, 2020 at 1:12 PM CherriesWriter – Vietnam War website wrote:
> pdoggbiker posted: ” by Chris Eger Using a mash-up of technology garnered > from WWII, the US military selected a compromise general-purpose machine > gun in 1957 that remains in limited service to this day. This gun, > officially known as the M60, has been carried my man” >
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I was, U.S. Army. We everyday, in the evening. Hooked up to pre-loaded Trailers. The following morning, we’d all assemble near the HQs, on LongBhin Post. Then at a Command. The Convoys seperated and took loads to the other Bases, we had in S. VieNam. We were back in our area, every day, before dark.
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Never been inside, a TANK. And never, will. I only watched from a distance
in Graffenwohr Germany. When they practiced on the firing Range.
To me that was, close enough.
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I was an M-60 gunner during my tour in the Marines during the 1970s. Most of our weapons were reconditioned ordnance that had been in Vietnam, and showed many signs of wear. I had few complaints about the M-60, and aside from the worn out components, That said, I now have a lump on my shoulder from carrying all 24.7 pounds of that blasted thing up and all over the countryside.
And I never ever heard an M-60 MG referred to as a “Pig”. That was the name we gave to the 155mm Howitzer.
P.S.
The Marines also used M-60s as coax guns on all their armor, while the Army used M-240s on theirs. When the Army phased out their M-60A3 tanks, the Marine Corps was able to obtain the former coax guns and modify them as LMGs.
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It’s fair enough.
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I think, nothing. OK
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That was my weapon while in my platoons’ Weapons’ Squad of my Airborne Infantry Unit. The 3/187th RAKKASONSOF THE 101st Airborne Division. A great weapon but not very good when firing blanks… AIRBORNE!
Daniel Cuvier rancoguy@aol.com
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Hello Daniel Oct 7th 1957 hmm That’s the year, I went from Nat’l Guard in Oklahoma ,to Active Duty in the Regular Army. Rec. Basic Tng. at now-closed Fort Chaffee, Arkansas. Retired in, Ft. Bliss, TXs. Had to get away from there. I don’t speak Spanish.
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Currently No, comment.
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So far, what I have read. It is good.
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I was a radioman, tactical air controller, I’m Mike 3/3 USMC IN 1968. I depended on the M-60 guys to deliver suppressive fire when bringing in medevac choppers to hot LZs. They never let me down.
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Interesting history of the M60. One thing though. In my Infantry squad and entire company, the M60 was always simply called “The Gun.” (C Co, 5/7, 1st Cav in ’70-’71) I had never heard the nickname “Pig” used for it until I read this article. But I wholeheartedly agree that we were VERY glad we had our M60s whenever we made contact in the jungle.
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I was on swift boats in Vietnam and we had 2 M60’s on our boat.They would put out some rounds.I was in charge of twin 50’s over the pilot house that would cut trees down when I shoot these twin 50’s.
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I had the ‘honor’ of carrying the pig while our normal guy was on R&R for a few days. I am way too small a guy to be hauling that puppy and it sure kicked my butt! I was real glad when R&R ended for him! Fortunately I didn’t have to use it and was very happy to return it to it’s ‘owner’. 69-70 Thua Thien 2/327th 101st No Slack.
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a HOG to carry in the jungle, but not too bad in flat rice paddy country.
You were damned happy to have it when the shit hit the fan.
I remember pissing on the barrel of the M2 on top of an APC.
3/4 Cav, 25th I.D. 1968
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I don’t recall carrying a second barrel, in the bush. We had ONE and did not have any gloves. We cooled the barrel down, if extended firing, using a small, plastic bottle of cream lotion (can’t remember name) or, water. I do recall that our M-60 had a carry handle, which was on the housing. 11B, C-1/7, 1st Cav. ’69-’70. Whatever, best weapon, in the arsenal, for a grunt, on patrol.
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You’re right about a second barrel – we never carried one in our platoon.
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I do not recall, a 2d Barrel. I do recall, a swivel HANDLE on the top of the Gun.
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All my time in Viet Nam, in Trans. we hauled supplies to many Bases.
We had an M-60 mounted on the rear of, each of our few Jeeps.
Yes, we had Firepower. But no, we never had to Fire at anytime.
That’s what, I am calling real good> LUCK.
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