Colt CM901

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CM901 Defense Review article

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More info:
Colt Modular Carbine (CMC) Model CM901

General Description:

The Colt Modular Carbine (CMC) Colt Model (CM901) is a User-level, mission configured, lightweight modular, multi-caliber, weapon system. The system utilizes a one-piece upper receiver and is a multi-caliber, multi-operating system carbine/rifle; it is magazine fed and capable of firing in both automatic and semi-automatic modes. Utilizing a revolutionary new lower receiver and bolt carrier design the CM901 provides unmatched modularity in carbine and rifle design, allowing the warfighter to quickly reconfigure the weapon system to meet multiple mission requirements.

Specifications:

The Colt CM901 can change calibers from 5.56mm up to and including 7.62 x 51mm NATO, by changing the upper receiver group. By simply disengaging the takedown and pivot pins (No Tools, Gunsmith, or Gauges Required), the user can quickly change from a 5.56mm Close Quarters Battle (CQB) short barrel configuration to a full length 7.62 x 51mm Extended Range Carbine (ERC) configuration in seconds without the need to re-zero mounted sights. The CMC weapon system is the ONLY SYSTEM to offer this user-level truly modular configuration capability. The CMC system all but eliminates critical mission time loss and key personnel requirements to execute weapon configuration changes. This self-contained design concept protects critical components of the operating system and provides uninterrupted operability in all environments. The CMC is the ONLY “Single Serial Number Weapon System” that can be reconfigured, at the commander’s discretion, into multiple carbine/caliber configurations without special tools. This same modular capability not only applies to the caliber, but also to the operating system, which can be configured for gas impingement, piston (Colt APC), or hybrid gas/piston (Colt AHC) operating systems. All of these modular attributes are now available at the unit level without sacrificing the battle proven ergonomics and reliability warfighters have come to expect from Colt Defense LLC products.

Colt CM901 7.62×51mm Carbine Features:

• Universal Lower Receiver-
– Unique design enables use of multiple calibers from 5.56 x 45mm up to and including 7.62 x 51mm available within a single serialized receiver
– Compatible with legacy M4/M16 magazines, and upper receiver/barrel assemblies with multiple barrel lengths
– Built in ambidextrous bolt catch, magazine catch, and selector
– Compatible with M4/M16 Trigger mechanisms
– Configurable with new Colt operating systems and designs

• Modular One-Piece Upper Receiver-
– Forged 7075-T6 Aluminum
– Steel inserts in critical wear areas provide higher level of reliability and extended service life of upper receiver
– Integral continuous MIL-STD-1913 rail extends the length of the receiver, providing rigidity, and uninterrupted mounting space
– Rigid MIL-STD-1913 rails at the 3 and 9 o’clock positions
– Removable Lower Rail at the 6 o’clock position allows for attachment of accessories like the forward grip, M203 and M320 grenade launchers, and other mission essential ancillary devices

• Barrel
Free floating barrel, 4 groove, 1 in 12” twist rate
Available in optional barrel lengths of 13”, 16, & 18”
Suppression Capable- Utilizes the SEI Vortex Compensator

• Bolt
– New advanced material providing extended service life of the bolt and reduces life-cycle costs

• Magazine
New Robust Polymer Construction
Compatible with the M110, MK11, and SR25 metal magazines

• Adjustable Folding Front Sight
Offers mounting of multiple sights and ancillary devices without obstruction of standard front sight post

• Mil-Spec Hard Coat Anodize-
– Available in multiple camouflage colors and patterns

Colt CM901 Benefits:

– Modular operating system

• Universal Lower Receiver permits the individual user — with no special tools — to convert a “single serialized lower receiver” into multiple caliber, barrel-length, and operating system configurations

• Eliminates need for non-standard weapon systems, and training for those systems, that are currently employed in the Battlespace in order to support Warfighter Multi-Caliber requirements to meet changing mission needs

• Designed to accept all legacy M4/M16 Colt upper receiver assemblies

• Designed for ease of disassembly, maintenance, and reassembly

– Stable platform for mounting optics and other ancillary devices to enhance mission performance and capability

• Reliable Zero Retention and Zero Repeatability provided by the rigid one-piece upper receiver design

• One-Piece Upper Receiver design reduces the number of components, increases rigidity, and provides system weight savings

– Improved Durability and Reliability

• Hardened Steel inserts in high wear areas of the upper receiver provides extended life

• New Advanced Bolt material enhances system life

• New Extractor and Extractor Spring enhances system reliability and durability

– Improved Accuracy

• Free Floating Barrel system incorporates a new barrel extension to upper receiver interface to improve accuracy and hit probability

– Ergonomically compatible with the M4 Carbine

• Very low Doctrine, Organization, Training, Material, Leadership, Personnel, Facilities (DOTMLPF) footprint in fielding to the Warfighter

• No need to re-train Warfighters on new system, only familiarize with upgrades

– Quality- ISO 9001:2008

– Made in the U.S.A and built to U.S. MIL-SPEC”
Click to expand...

http://www.defensereview.com/dr-exclusive-scar-who-meet-the-colt-cm901-modular-multi-caliber-7-62mm-nato5-56mm-nato-battle-carbinesbrrifle-for-u-s-military-special-operations-forces-sof-and-general-infantry-forces-gif/

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Yes, it supposedly can use regular AR mags as well.

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Testing videos from Defensereview.com

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I really would love to know how the universal lower works. Though it looks like it might adapt to the upper configuration to ensure positive magazine alignment and feeding.

Not for sale yet, still in testing prototype would be my best guess.

Most likely targeting the military purchasers to buy the universal lowers, then take your pick of upper: 5.56 NATO and 7.62 NATO for sure. Wondering about the 6.8 SPC, but as Colt, to my knowledge has never made 6.8 SPC uppers it might not be compatible yet. They only list legacy Colt uppers being compatible, however given the modularity of AR15 parts it might be possible.

This same modular capability not only applies to the caliber, but also to the operating system, which can be configured for gas impingement, piston (Colt APC), or hybrid gas/piston (Colt AHC) operating systems.
Click to expand...

Can somebody explain the hybrid gas/piston operating system? I've never heard of it, but it sounds interesting.

This make things interesting and that's for sure.
 
Lee Enfield said:
Colt may have a real player here. I noticed all the airbrushed photos that don't show the adaptor.

Realistically it might be too modular.
Click to expand...

Kinda what I was thinking. My thought would be can it run 5.56 as good as a standard AR? If not then really there isn't a point.

Its pretty easy to figure out how the adapter works. Its the lower controls that interest me.
 
Lee Enfield said:
Colt may have a real player here. I noticed all the airbrushed photos that don't show the adaptor.

Realistically it might be too modular.
Click to expand...

Kinda what I was thinking. My thought would be can it run 5.56 as good as a standard AR? If not then really there isn't a point.

Its pretty easy to figure out how the adapter works. Its the lower controls that interest me.
 
As far as I can see, it's basically an AR10 style lower that will adapt to an AR15 upper and mags, given that light weight and compact size were the prime reasons for the AR15,the idea of using a heavier/bigger lower seems sort of odd, but then again a piston AR seems odd to me.
 
Most likely targeting the military purchasers to buy the universal lowers, then take your pick of upper: 5.56 NATO and 7.62 NATO for sure. Wondering about the 6.8 SPC, but as Colt, to my knowledge has never made 6.8 SPC uppers it might not be compatible yet. They only list legacy Colt uppers being compatible, however given the modularity of AR15 parts it might be possible.
Click to expand...

6.8 SPC upper receivers are the same as 5.56 ones. I don't see why this unit wouldn't be able to take any upper with standard pin spacing.

I'm intrigued by the possibility of an intermediate length upper optimized for something like this 7x46mm cartridge:

http://m4carbine.net/showthread.php?t=19936

This lower combined with the right adapter piece would would make that easier to do than if a whole new lower needed to be built.
 
enefgee said:
As far as I can see, it's basically an AR10 style lower that will adapt to an AR15 upper and mags, given that light weight and compact size were the prime reasons for the AR15,the idea of using a heavier/bigger lower seems sort of odd, but then again a piston AR seems odd to me.
Click to expand...

I weighed my LMT AR10 lower in comparison to my Knight's SR15 lower.
Both are almost identically outfitted. The AR10 lower is 2lbs 11.8 oz. and the Knight's is 2lbs 6.5oz. That is a difference of only 5.3 ounces, so not all that much in the scheme of things.
 
beltfed said:
I weighed my LMT AR10 lower in comparison to my Knight's SR15 lower.
Both are almost identically outfitted. The AR10 lower is 2lbs 11.8 oz. and the Knight's is 2lbs 6.5oz. That is a difference of only 5.3 ounces, so not all that much in the scheme of things.
Click to expand...

Wow, I would have thought it would be more than that, but it does make sense that the extra meat would be in the upper, lowers are fairly lightly stressed.
 
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