There great guns I own a couple, as for Value I bought mine years ago for a couple hundered a piece. They have gone crazy I've heard.    Scott you forgot your bayonet for the picture....

yes I had a 7th N.Y. jacket from the same time period, they where almost identical except gray different buttons and I dont remember a black band or the brass trim. 

Here is a nice example of the new 1st Battalion, 187th Infantry Regiment's Beret Flash being warn by a 1st battalion major at the Army's 250th Birthday celebration in DC. I call the flash new, because 1-187 was not in existence during the time the 101st was wearing the dark-blue air assault beret (1974-1979), so it had no historical beret flash to fall back on. I think it is very cool that air assault units are beginning to wear organizational beret flashes, just like their wear airborne background trimming behind their Air Assault Badge.

There were some skeet, & trap guns used for training but I believe they were the earlier purchased versions marked UNITED STATES PROPERTY & GHS inspected. As stated the 20" riot would be my guess. (I agree with SSG Mac & loose that thing on the front.) Here is my Trench gun. 

Here are the photos of the badge...

Probably 1880's. That style Massachusetts button dates to the late 1800's. I have a pair of similar epauelets on an 1872 style Massachusetts jacket, but mine are likely a bit earlier as they still used the Civil War style Massachusetts buttons.

Its not often you get to see original film footage of "your man" in the field!

The second one is called "Main Office".   1:10 into the film you see Heagy sorting mail and Miles talking about how he was the units unofficial mailman.   Here:  

I've been continuing to do research on Heagy.  This site has a trove of information about SACO:   https://saconavy.net/   Under the "Historical Videos Taken in China" there are 7 clips of the work of SACO in China that is narrated by Rear Admiral Miles (the CO of SACO).   He must have recorded these narrations at a reunion because there is clearly a crowd of people in the room laughing at his jokes.  Videos here:    https://saconavy.net/videos/   Two of them have footage of Heagy where he is mentioned by name.   The first video (titled "Happy Valley") starts with a scene of 4 officers.  Heagy is on the right in the pith helmet.  Here:   

Lt. Col. Justin Hunter, the incoming commander of 1st Battalion, 320th Field Artillery Regiment, 2nd Mobile Brigade Combat Team, 101st Airborne Division (Air Assault), stands in front of the battalion color guard after assuming command over his battalion, May 9, 2025, Mihail Kogălniceanu Air Base, Romania.