What kind of colt upper is this

[cjnowell72]

i believe it is a 10.5 barrel. ARMS bi level 50sc rail system on it and a ugly camo paint job. What model upper is it

 

[cjnowell72]

All the colt fan boys on this page and nobody knows??

 

[NWSharpshooter]

Looks like a cut down m4 barrel. Guessing the barrel is 10.3” now?

 

[cjnowell72]

Looks like a cut down m4 barrel. Guessing the barrel is 10.3” now?

As far as i know it is factory other than the rail and paint.

 

[cjnowell72]

Here is the profile pic

 

[cjnowell72]

Measured the barrel and it 11.5”

 

[cjnowell72]

Rollmarks show to be the same as Commando but what's the profile like that's under the hand guards.. SOCOM, Commando ?

Shove a bolt & carrier into battery, drop in a cleaning rod and measure the length that doesn't protrude from the end of the barrel.

If were a cut down barrel, I assume those roll marks wouldn't be there, or fully be there, that they'd mostly be on the lopped-off part or removed by re-threading process.

From the bit of research i did this seems to be a 6933 commando upper. Sound correct?