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9/22/2017 12:11:25 AM
Posted: 9/24/2005 6:13:18 PM EDT
Just wondered if anyone could tell me if Colt assembled any non T marked flat top uppers for military use or is the non T marked M4 Upper just a replacement part only . The reason that I ask is that I recently came across a Colt M4 flat top upper marked C A behind the brass deflector and marked M4 above the gas tube. It had the SOCOM heavy M4 barrel with an M16 bolt carrier that lacked the T markings. Thanks in advance for any help.
Link Posted: 9/24/2005 6:16:43 PM EDT
Link Posted: 9/24/2005 7:49:47 PM EDT
[Last Edit: 9/24/2005 7:50:08 PM EDT by scottryan]

Originally Posted By BravoCompanyUSA:
Some Colt uppers do lack the T-markings.
IIRC, all current production has them.


All USGI now have T numbers.

The current batch of comercial uppers that came out of Colt doesn't have T markings and they are C keyhole marked. Comercial weapons may or may not have T numbers

T numbers came out in 1998.
Link Posted: 9/25/2005 4:34:28 AM EDT
Link Posted: 9/25/2005 12:55:58 PM EDT
you are correct
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