So I just got PCS’d to Rock Island Arsenal a few days ago and I just finished walking thru the museum. It’s a small museum but if you ever have a chance to walk thru it I recommend doing so. Despite its small size they have a lot of interesting variants and pieces, including the first ever 1903 to come off the line.

Anyway, I walking thru the military rifles displayed and I come across a couple of 1903a4’s and one in particular caught my attention because it’s topped with a Weaver K4. As far as I was tracking no K4 scopes were ever used with a4 rifles. The museum has binders with the documents on each rifle and sure enough it’s cataloged as a 1943 built a4 with a K4.

Probably means nothing since it was acquired in 1977 but I still found it interesting.

The Rock Island museum is out-freaking-standing.  FYI they didn't have 1903 #1.  They had Rock Island 1903 #1.  Springfield Armory 1903 #1 is in the Springfield Arsenal.  It was supposed to be a museum piece all along but it was rebuilt and issued out in WWI.

The K4 was indeed a A4 scope.  I've seen others out in the wild.  One of the better ones I've seen was an A4 with a M84 like M-1Ds had.

Also, Rock Island has a large collection of verified (by forensics) Indian rifles used against Custer at the Big Horn.

Been there many times, Davenport is my hometown.  Fascinating place.