I found various variants After i seemed. Some have been marked M-16A1, and a few were marked M16A1. Some experienced SERIAL in fact stamped on there ahead of the serial selection, and Other individuals did not. Yes, I'm certain the higher receiver is Colt, along with the BCG.  It is actually the barrel that is certainly questionable to me. I

The mag launch button experienced a horizontal line sample on it, vs . the circular line sample located on The existing types, see the image beneath for an instance: If it is a bell condition, that will be appropriate for any Colt. And the fuel tube colour and texture is intriguing. See if the fuel tube will entice a magnet also to what diploma.

Its a fascinating phenomenon. You can buy a support rifle from WW1, WW2 and Korea In case you are a collector. But once the Army adopted find fire weapons for common situation it happens to be close to unattainable to collect Vietnam-Current working day assistance weapons. Sadly, I am on vacation so I can not article shots from the bolt.  It is