Odd FN M4A1 "Carbine"

[OH58D]

I recently had the chance to inspect what appears to be a FN16 converted to an M4A1. It had the standard 6 position stock, Knights RAS and Matech Buis.
https://i.imgur.com/DsmD2wVh.jpg
https://i.imgur.com/IJH9L7fh.jpg

[Iraqgunz]

It was an FN made M16A2 or M16A4 and converted to an M4. I saw some similar to this in Iraq with the U.S. Air Force, except they were Colts and some other weird one.


I was recently visiting with friends at Fort Knox, home of US Army Cadet Command, and I had a chance to inspect one of the "carbines" used for BRM and dragging around for 21 day FTX's by Advanced Course ROTC Cadets. These things get beat to hell and I had never seen markings on the side of the FN Carbine like this, so I present them here for your review. I am guessing this lower started out as an FN16 and was re-purposed as an M4A1. It has the traditional 6 position stock, Knights RAS and Matech Buis:
https://i.imgur.com/SMTDLr6h.jpg
https://i.imgur.com/zuUvHyKh.jpg

[WTF?Shane]

Yeah, looks like M16 converted to M4, then to M4A1.

[High Tower]

That's pretty cool. In basic, my M16A4 had the 2 crossed out and restamped 4 right next to it. It seemed a little ghetto, but it worked.

[blade_68]

Yep Army is back to doing that again like in 80s to rifles I'd seen GM Hydros, H&Rs and Colts done that way. Some was old Colts that was OEM Mil property marked as AR 15 re-stamped M16a1 and M16s re-stamped M16a1 with newer uppers with forward assist. I wish I'd been snapping pictures of them now I'd bet my Command would have crapped a brick if I did. In fact some A.D. Inf units was still using them in to mid 90s... I was.

[ABNAK]

Yep Army is back to doing that again like in 80s to rifles I'd seen GM Hydros, H&Rs and Colts done that way. Some was old Colts that was OEM Mil property marked as AR 15 re-stamped M16a1 and M16s re-stamped M16a1 with newer uppers with forward assist. I wish I'd been snapping pictures of them now I'd bet my Command would have crapped a brick if I did. In fact some A.D. Inf units was still using them in to mid 90s... I was.

LOL! I was a grunt from 83-87 and the M16A1 was still the weapon issued by the Army at that time. In Panama mine was a Hydra-matic but I recall seeing a Colt lower stamped XM16E1.

[WTF?Shane]

I recently had the chance to inspect what appears to be a FN16 converted to an M4A1. It had the standard 6 position stock, Knights RAS and Matech Buis.

OP, if you remember, was the fire selector markings also altered?

[OH58D]

OP, if you remember, was the fire selector markings also altered?
If I remember, it was not.