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The U.S. Army identifies the M68 Close Combat Optic (CCO) as its standard-issue red-dot sight for the M4/M16. The M150 Rifle Combat Optic (RCO), sometimes used on the same weapon systems, is a separate 4× magnified optic—not a red dot. Available official sources describe these optics and their intended roles, but do not establish current Army-wide issue rates.
Which red-dot sight does the Army use?
The Army’s PEO Soldier equipment portfolio identifies the M68 Close Combat Optic as the standard-issue red-dot sight for the M4/M16. It is a unity-power electronic aiming device, meaning it has no magnification. The Army says it supports target acquisition while allowing a Soldier to keep both eyes open and maintain situational awareness.
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The M68 product page names COMP M2 and COMP M4/M4S configurations. Its figures are Army-listed sight-only specifications, not independent measurements:
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Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →| Configuration | Weight | Length | Magnification |
|---|---|---|---|
| COMP M2 | 7.0 ounces | 5.1 inches | None |
| COMP M4 or M4S | 9.3 ounces | 5.3 inches | None |
Those specifications identify configurations in the Army portfolio; they do not establish that every sight currently in service is identical to a consumer-market listing or that every Soldier receives one.
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How the M68 differs from the M150 RCO
The M150 Rifle Combat Optic is a distinct optic listed for M4, M16 and M249 weapon systems. It is battery-free and provides 4× magnification. Its reticle supports range estimation and bullet-drop compensation; PEO Soldier describes accurate engagement capability from 300 to 600 meters for trained operators.
| Feature | M68 CCO | M150 RCO |
|---|---|---|
| Optic type | Electronic red-dot sight | Magnified rifle combat optic |
| Magnification | None | 4× |
| Battery dependence | Electronic sight; the cited page does not state a battery-free design | Battery-free, according to PEO Soldier |
| Listed platforms | M4/M16 | M4/M16/M249 |
| Stated role | Rapid target acquisition while maintaining situational awareness | Magnified aiming, range estimation and bullet-drop compensation |
Their overlapping platform listings do not make them interchangeable models of one red-dot sight. The Army descriptions outline intended functions, not a controlled performance comparison or proof that one optic is universally better.
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What is known about Army issue rates?
A 2011 U.S. Army Infantry article reported that about 85 percent of M4 carbines in the distribution context it described were issued with a CCO; the remaining weapons were issued with the four-power M150 RCO. It also said M240 machine guns were issued with the M145 Machine Gun Optic. That is a historical snapshot, not a current Army-wide allocation rate. The cited official equipment pages do not provide a current force-wide distribution count.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The same 2011 article reported that the Army had passed its millionth M68 CCO purchase milestone in 2010. That procurement milestone is not a count of current inventory or sights still in service. Separately, the FY2015 Army budget justification described an improved optic combining the M68’s close-range rapid-acquisition role with magnified capabilities associated with the M150 and M145. That historical program description alone does not establish what is fielded now or in which configuration.
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Do Army M17 and M18 pistols come with red dots?
A 2020 Army article on M17/M18 training says the pistols came with tritium sights and had a removable slide plate that allowed a red-dot sight to be installed. This establishes that the platform permits an optic installation; it does not say that all M17/M18 pistols are issued with red dots.
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What the Army’s optic descriptions do—and do not—establish
- The M68 CCO is the Army-identified standard-issue red dot for M4/M16 platforms in PEO Soldier’s equipment portfolio.
- The M150 RCO is a separate, battery-free 4× optic listed for M4/M16/M249 systems.
- Other weapons and roles may use other optics; the M68 is not described as the sole optic across the Army.
- Historical purchasing and distribution figures should not be read as current inventory or issue rates.
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