Originally Posted by
OLIAR15
I know “with Colt everything is possible” is used a lot. But in this case I don’t think it’s possible. An M4 by definition is a flat top.
And an old upper with A1 sights like this on an M4 marked Colt lower ? No way in my opinion
I had a transitional AR-15 A2 with this upper. It was made in 1987
Still a nice rifle
The first M4's used A2 uppers, the one pictured could very well be legit, during the early A2/M4 time frame Colt was using up lots of left over parts so a A1 upper with brass deflector is not out of the question and I have even seen pictures of them before.
Last edited by mack7.62; 03-15-21 at 11:55.
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