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AR15.COM
2/13/2014 2:25:34 PM EDT
Hello, does anyone know when Colt first produced the M4 Colt Commando RO933?

Regards, Joe
2/14/2014 9:29:30 AM EDT
[#1]
mid '60s if I'm not mistaken
2/14/2014 12:01:29 PM EDT
[#2]
I think that would have been the RO733.  The RO 933 has the M-4 flat top.  I think Colt started building the M-4 Commando around 1999.  However I'm not sure.

Regards, Joe
2/14/2014 1:29:41 PM EDT
[#3]
My M4 Commando RO933 barrel is stamped 11/96
Dk.Gray color upper with M4 feed ramps
2/15/2014 2:28:50 AM EDT
[#4]
Quote History
Quoted:
I think that would have been the RO733.  The RO 933 has the M-4 flat top.  I think Colt started building the M-4 Commando around 1999.  However I'm not sure.

Regards, Joe
View Quote


yup I think you're correct.
the flat top upper was introduced in the mid 90s with the M4 carbine. I would assume Colt started building the 933 at the same time.