×
Aircraft / Aviation Vehicles & Artillery Infantry Arms Warships & Submarines Military Pay Chart (2023) Military Ranks
Advertisements

HOME
INFANTRY
MODERN ARMIES
SPECIAL FORCES
COUNTRIES
MANUFACTURERS
COMPARE
BY CONFLICT
BY TYPE
BY DECADE
COLD WAR

Infantry Small Arms / The Warfighter


Colt ACR (Advanced Combat Rifle)


Experimental Assault Weapon Prototype [ 1989 ]



The Colt ACR was offered for the U.S. Armys Advanced Combat Rifle program looking to succeed the M16 family of rifles.



Authored By: Staff Writer | Last Edited: 05/12/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

GO TO SPECIFICATIONS [+]
Advertisements
In the late-1970s, the United States Army began looking at the prospect of succeeding its M16A2 combat rifles and this was the impetus for various small arms weapons programs of the 1980s and 1990s that followed. In the 1980s, this was the Advanced Combat Rifle (ACR) program which sought to increase the first-hit probability of the standard infantryman. Three phases were fleshed out and six contractors were part of the initial work. By Phase III, only AAI, Colt, Heckler & Koch and Steyr were left.

Colt elected for an advanced form of its existing M16 rifle family and, as such, the weapon held a look and feel similar to that of the earlier rifle. The greatest change was in the oversized heat shield added over the barrel component and a revised, longer-running carrying handle over the receiver. The buttstock was collapsible and a slotted flash hider fitted over the barrel. An ambidextrous selector control scheme allowed for single- or full-automatic fire. Beyond the iron sights fitted there was provision for an optics set to be installed. Chambering was in 5.56x45mm NATO or "Duplex" while the operation remained gas-operated at its core.

The Duplex round was a single cartridge holding two bullets and developed by the Olin Corporation (Winchester) for the competition. The company eventually pushed three different cartridge types with the third offering being selected for finalizing. In the Duplex design, multiple bullets were sent at the target in quick succession, theoretically improving first-hit probability. The first arrived where aimed with the second arriving near the first's target zone. Many of the other ACR submissions followed the multiple bullet approach as this was deemed the best possible method to fulfill the Army's requirement.©MilitaryFactory.com
Advertisements
While the muzzle compensator worked well to reduce recoil and maintain control of the firing weapon, the dual-bullet design reduced accuracy at long ranges - requiring the operator to also carry basic 5.56x45mm NATO ammunition for any shots longer than medium range (about 325 meters).

In the end, none of the submissions were selected for further development as none could increase the M16A2's first-hit probability by 100%. After several hundreds of millions of dollars, the ACR program was killed. Attention then turned to the Objective Individual Combat Weapon in the 1990s but this too failed to find a successor to the storied M16 family of rifles - which remains in use today (2016).©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.
Advertisements

Specifications



Service Year
1989

Origin
United States national flag graphic
United States

Classification


Experimental Assault Weapon Prototype


National flag of the United States United States (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Automatic Function
Features a mechanical function to automate the firing action.


Overall Length
1,031 mm
40.59 in
Barrel Length
518 mm
20.39 in
Empty Wgt
7.30 lb
3.31 kg
Sights


Iron; Optical Support


Action


Gas-Operated

Gas-Operated
Gas-operated system is featured, typically involving a gas cylinder and rear-driven piston directing energy to the bolt component.
(Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information)


Caliber(s)*


5.56x45mm NATO; Duplex

Sample Visuals**


Graphical image of a 5.56mm intermediate rifle cartridge
Rounds / Feed


30-round detachable box magazine
Cartridge relative size chart
*May not represent an exhuastive list; calibers are model-specific dependent, always consult official manufacturer sources.
**Graphics not to actual size; not all cartridges may be represented visually; graphics intended for general reference only.
Max Eff.Range
1,800 ft
(549 m | 600 yd)
Rate-of-Fire
650
rds/min
Muzzle Velocity
3,110 ft/sec
(948 m/sec)


ACR ("Advanced Combat Rifle") - Base Series Designation


Military lapel ribbon for the American Civil War
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Cold War
Military lapel ribbon for the Korean War
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the Ukranian-Russian War
Military lapel ribbon for the Vietnam War
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2


Ribbon graphics not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns / operations.

Images Gallery



1 / 1
Image from the Public Domain.


Advertisements







Disclaimer | Privacy Policy | Cookies


2023 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing all American military medals and ribbons.


www.MilitaryFactory.com • All Rights Reserved • Content ©2003-