MK 19 40MM Machine Gun

The Mk 19 Grenade Launcher is a belt-fed automatic 40 mm grenade launcher or grenade machine gun that entered U.S. military service during the Cold War, first seeing action during the Vietnam War and remaining in service today.
MSRP: 
13758
Date of Design (year): 
1971
Length (mm): 
109470
Barrel Length (mm): 
610
Weight Empty (kg): 
32.92
Muzzle Velocity (m/s): 
240.69
Effective Range (meters): 
1600
Rate of Fire (round/min): 
325
Headline: 

The Mk 19 Grenade Launcher is a belt-fed automatic 40 mm grenade launcher or grenade machine gun that entered U.S. military service during the Cold War, first seeing action during the Vietnam War and remaining in service today.

The Mk 19 fires 40 mm grenades at a cyclic rate of 375 to 400 rounds per minute, giving a practical rate of fire of 60 rounds per minute (rapid) and 40 rounds per minute (sustained). The weapon operates on the blowback principle, which uses the chamber pressure from each fired round to load and re-cock the weapon. The Mk 19 is able to lob its grenade at a maximum distance of 2,212 meters, though its effective range for a point target is about 1,500 meters, since the large rear leaf sight is only graduated to 1500 meters. The nearest safe distance to launch the grenade is 75 meters. In addition, the Mk 19's flash suppressor and its lack of smoke during firing makes it difficult for enemies to spot and counter it. For night operation, an AN/TVS-5 night vision sight can be fitted.
The Mk 19 is a man-portable crew-served weapon that can fire from a tripod mounted position or from a vehicle mount (this being the preferred method as the weapon alone weighs 75.6 lbs). The primary ammunition for Mk 19 is the high explosive dual-purpose M430 grenade. Upon impact, the grenade can kill anyone within the radius of five meters, and wound them within the radius of 15 meters. It can also punch through two inches of rolled homogeneous armour with a direct hit (0 Degree Obliquity), which means it can penetrate most infantry fighting vehicles and armored personnel carriers. It is especially effective when used against enemy infantry formations. The ammunition comes in 32 or 48 round cans weighing 42 and 60 lb (20 and 30 kg). Due to its low recoil and comparatively light weight, it has been adapted for use on many different platforms, including small attack boats, fast attack vehicles such as the Humvee (HMMWV), AAV and Stryker, military jeeps and a large variety of naval mounts.
The Mk 19 automatic grenade launcher replaced the earlier Mk 18 hand-cranked multiple grenade launcher. The 40 mm ammunition used (40x53mm) is not interchangeable with that used in the M203 (40x46mm). The M203 grenades are technically "low-velocity" grenades, and are generally of the standard High Explosive variety, whereas the Mk 19 utilizes "medium-velocity" High Explosive Dual-Purpose (HEDP) variety. The Mk 19 utilizes an open bolt principle. The rounds are mechanically fed onto the bolt face with the pull of the charging handles. When the trigger is pressed, the bolt closes, and the firing pin is released. The recoil blows back the bolt, dropping the empty casing, and then feeds a new round onto the bolt face. This design has caused sporadic fatalities in the crews that operate the system. If the weapon system jams, the operator many times must remove a live round from the open bolt face. If the breech closes during this procedure, the round can detonate inside the gun, killing and/or maiming anyone nearby. However, the weapon will not accidentally or intentionally fire a round if one of the charging handles is in the down position. These incidents are rare.
The Mk 19 is made by General Dynamics and Saco Defense Industries.

SERVICE
It was originally fielded by the US Navy in Vietnam for river patrol boats, but was adopted and improved upon by the US Army. The Israeli Defence Forces also adopted the weapon, fielding it in infantry and mechanized units. Sweden made the Mk 19 under license as the Grksp 40 mm grenade launcher. Taiwan has this made under license as the Type 83 made by the Combined Service Forces.
The Mk 19 has been used by American forces in Somalia (1993) and in Iraq (1991) by special forces operating behind enemy lines. It is currently in widespread use in the U.S. Military

MK 19 40MM Machine Gun Reviews (1)

Ol' Black Betty

This is one mean weapons system...and my best friend

Full gunreview »

10 Comments

6 years 5 weeks ago, 6:13 PM

sytasyn_syn

sytasyn_syn's picture


Rank:
General
Points:
3614
Join Date:
May 2008
Location:
Michigan, United States
My Mistress

This is the weapons system I had mounted on my M1114 on my first deployment to Iraq while doing convoy security. This is a BEAST. Her name was "Black Betty".

Be Kind and Courteous to All That You Meet, But Always Have A Plan to Kill Them -U.S. Marine Corp General-
6 years 3 weeks ago, 4:33 AM

Amnitrix

Amnitrix's picture

Rank:
Captain
Points:
28
Join Date:
Jun 2008
COST $$$

I wonder How Much It Cost?

6 years 3 weeks ago, 9:53 PM

sarge225

sarge225's picture

Rank:
Colonel
Points:
141
Join Date:
Apr 2008
Location:
Lafayette, Louisiana, United States

its just a shame how deadly this thing is

6 years 2 days ago, 2:04 PM

Reaper308

Reaper308's picture


Rank:
Secretary of Defense
Points:
6226
Join Date:
Jun 2008
Location:
Airstrip One, Oceania

wouldn't want to be on the wrong end of this bad boy

"Proelium Comminus Auctoritate" "Sometimes the light at the end of the tunnel is a muzzle flash."
5 years 52 weeks ago, 7:36 PM

Solid-Snake

Solid-Snake's picture

Rank:
Corporal
Points:
3
Join Date:
Jul 2008
40mm AGL's

Im in current military service, i've done the course for this mean lil bugger... It was like the first time having sex......

Tactical Espionage Action
5 years 50 weeks ago, 8:01 AM

Zardaia

Zardaia's picture

Rank:
Private First Class
Points:
2
Join Date:
Jul 2008
MK 19

great weapon but limited applicability on many missions due to urban terrain and "civilian" casualty concerns. Plus while deployed we had an idiot army private, negligent discharge, put 3 rounds into the MWR tent...thank god for arming distance!

Current AD/AF SF

5 years 43 weeks ago, 3:32 PM

sytasyn_syn

sytasyn_syn's picture


Rank:
General
Points:
3614
Join Date:
May 2008
Location:
Michigan, United States
Hooah!?!?!?

Notice he said ARMY private!!!

Be Kind and Courteous to All That You Meet, But Always Have A Plan to Kill Them -U.S. Marine Corp General-
5 years 46 weeks ago, 10:04 PM

hawkeye247

hawkeye247's picture

Rank:
Master Sergeant
Points:
14
Join Date:
Aug 2008
so much fun

this weapon is so much fun to shoot its such u blast

5 years 43 weeks ago, 3:18 PM

Dr wrink

Dr wrink's picture

Rank:
Lieutenant Colonel
Points:
77
Join Date:
Aug 2008
Used by military

Its been mounted onto Humvees and helicopters I have seen it in the past.

5 years 39 weeks ago, 5:13 AM

ar600935

ar600935's picture

Rank:
Private
Points:
1
Join Date:
Oct 2008

Hi,

I have never seen this machine gun closer and I had no chance to use it. I have some problems in my design work and I need some answers. If some of you answer it I will be very happy.

My questions are:

1-Is it possible to charge this weapon manualy by using only one charging handle?

2- Is it enough to open the top cover around 35° during the charging process, I mean feeding the ammunition belt and placing the ammunition into the machine gun?

Best regards

Rating Overview

User Rating:
(2 votes)
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MK 19 40MM Machine Gun Info

Category:
Machine Guns
Manufacturer:
Saco Defense
Action:
Blow-back
Type:
Automatic
Caliber:
40MM
Barrel Length:
610mm
Frame/Material:
Metal
Finish/Color:
matte black
Capacity:
32 or 48 round cans
Sights:
Leaf Sights

MK 19 40MM Machine Gun Pictures (4)

MK 19 40MM Machine Gun
MK 19 Tripod Fired
MK 19 40MM Machine Gun
MK 19 Vehicle Mounted

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