5.56mm M-4 Carbine
The M-4 Carbine is a shortened M-16A2 rifle introduced in 1988. It has replaced about 10 percent of the M-16s in the Army (as of 2003) and has been issued to Marine units selectively. However, it is not intended to completely replace the M-16. The advantage is that the M-4 Carbine is smaller and more compact and most soldiers carrying an M-16 would rather be carrying an M-4. Itís smaller, lighter and is better for shooting out of vehicles.
Carbine, 5.56mm, M-4 fully equipped with M203A1 Grenade Launcher, M68 Reflexive Scope, AN/PVS-14 NVD, PAQ-4 IR Laser.
Today in WW II: 11 Jul 1940 US Quartermaster Corps asked 135 companies to bid on seventy light reconnaissance and command cars, the origin of the military jeep. More ↓
11 Jul 1941 Establishing the first US foreign intelligence organization, Wm. J. Donovan becomes Coordinator of Information, head of the organization renamed OSS in 1942, the predecessor of the post-war CIA.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.
Description of the M-4 Carbine
M-4 Carbine with IDF rubber bullet attachment.
The M-4 or M-4A1 5.56mm Carbine is a shortened version of the M-16A2 rifle. It is a lightweight, gas operated, air cooled, magazine fed, selective rate, shoulder fired weapon with a collapsible stock. The M-4 Carbine achieves over 80% parts commonality with the M-16A2 to simplify logistics. It will replace all M-3 .45 caliber submachine guns and for certain service applications, it will replace M-9 pistols and regular M-16 rifles.
The M-4A1 has a rail-mounted forward handgrip, a telescopic stock, a removable carrying handle and Military Standard 1913 (MilStd 1913) accessory mounting rail for night vision sights, combat optics, red-dot laser sights, flashlights or other add-ons, even the M203A1 grenade launcher. The trigger unit is also modified to fire full-auto rather than three-round bursts.
The M-4A1 Carbine Special-Operations Peculiar-Modified (SOPMOD) is described on the linked page.
Characteristics of the M-4 Carbine
USMC M4A1 carbine with 10 inch barrel.
The M-4 Carbine is an anti-personnel weapon designed to be more agile and lighter weight while retaining its lethal effect. Specifications are:
|Length, stock retracted
||2 ft. 5.79 in.
|Length, stock extended
||2 ft. 9.49 in.
|Weight, w/ sling and one magazine
|Maximum effective range, area target
|Maximum effective range, point target
|Cyclic rate of fire
||825 rounds per minute
Carbine, 5.56mm, M-4A1 showing rail mounting system with accessory equipment.
Bayonets for the M-4 Carbine
The M-4 Carbine uses the M-7 bayonet which was replaced by the newer M-9 Multipurpose Bayonet System starting in 1987. Since 2002, Marines use the USMC Multipurpose Bayonet (MB). The M-4 Carbine is interchangable with the M-16 for these bayonets.
Russian paratrooper fires M-4 Carbine during joint training exercise with A Company, 2nd Battalion, 502nd Infantry in Lazarevica, Republika Srpska, on 8 December 1999.
M-4 Carbine Grenade Launchers
Both the M203A1 40mm Grenade Launcher and the M320A1 40mm Grenade Launcher are designed to be fitted under the barrel of the M-4 Carbine for additional firepower. See the linked Olive-Drab.com pages for more information on the grenade launchers.
Find More Information on the Internet
There are many fine websites that have additional information on this
topic, too many to list here and too many to keep up with as they come and go.
Use this Google web search form to get an up to date report of what's out there.
For good results, try entering this: m4 carbine. Then click the Search button.