Jul 21, 2020 · US Property marked XM16E1 Colt's and M16A1, both Colt Model 603. There are also a small number of US Air Force M16 Colt's Model 604 found in this serial number range. …

Oct 25, 2008 · This guide is specific to factory original Colt 603 barreled uppers. Colt delivered 603's to the US Army from the Spring of 1964 through 1982. These were originally roll marked …

Jan 29, 2019 · As I have said countless times over the past year, the Colt Reissue M16A1 is not worth $2500. I believe Colt knew that. It was said at the Shot Show, when a Colt …

Feb 9, 2013 · I'm somewhat confused as to what shade finish was applied to U.S. Property marked 603/M16A1 rifles manufactured 1968-1969. My understanding was that it was 'Colt' or …

May 6, 2006 · I bought this upper off the EE a couple months ago. It was described by the seller as an unfired Colt M16A1 factory replacement upper. The markings on the barrel do not seem …

Nov 29, 2010 · Note the XM16E1 & "early" M16A1 markings are the same w/the exception of XM16E1 being changed to M16A1, the "late" M16A1 marking which came into use …

Nov 22, 2020 · The other one went for $904 due to the uniqueness of having the raised “+” on the partial fence and being in the 500,000 serial number range, you NEVER see them. There’s a …

Jan 3, 2020 · A quick google search of “Colt M16A1 Rollmark” will yield the proper M16A1 marking, and the SN range can be found in the variation guide at the top of the Retro Forum. …

Feb 9, 2011 · H&R and Hydramatic also made M16A1 rifles. Numbers produced were much smaller then Colt, so these uppers do not turn up as often. Both delivered M16A1 rifles from …

Apr 27, 2014 · I've added new pictures. Please remember this upper was purchased "Stripped". The sight, forward assist, etc. are all from a USGI Colt M16A1. Thanks in advance for …