The existence of the Colt M5 has been known for some time but there has been very little discussion of the program in public. Information that is available indicates that the M5 has been tested and/or fielded in three calibers and eight different models.
This post is only going to look at the four 5.56mm models. I am going to show you data sheets for three of the four versions and just an image of the fourth variant. The Colt M5 Carbine models are as follows:
Colt CM556-10H-M5A-SCW 10.3″ barrel 5.56 x 45
Yes, you guessed it…this is the newest version of the Colt Sub-Compact Weapon (SCW)
Colt CM556-10H-M5A 10.3″ barrel 5.56 x 45
Colt CM556-11H-M5A 11.5″ barrel 5.56 x 45
Colt CM556-14H-M5A 14.5″ barrel 5.56 x 45
I have not seen any indication to date that the M5 family of firearms are set for release on the civilian market. My fingers are crossed. I hope you have enjoyed this look at these four 5.56 x 45 variants of the M5 Carbine.
The Colt AR-15 Resource 
The full ambidextrous controls on an AR15 new for Colt? I like it, when do we get ours?
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Soon I hope.
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Colt branded m-lok rails…any idea if these are manufactured by Colt or contracted to Centurion Arms?
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I do not know who the manufacturer would be.
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I do not know who specifically makes them. I have seen a Colt branded rail from Troy on both 2013 SOCOM models as well as a SBR upper receiver that I have in my collection.
The current rail used on the M5 I am unsure about.
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