If by left antenna you mean right then yes... ; )
The T track I used was the ones made by Dave at DEC. They were modeled by Deadbolt. They has the correct profile and size IMO.
This was confirmed when Deadbolt discovered, after 40 odd years the TomTitt parts and we were able to check those original parts with the 3d models and found them to be VERY accurate. This confirmed the scaling he used to model the other parts as well.
After many attempts to try to get the same look using the T track and antenna as prior builds where the antenna are placed on top of the T track base, I found it never looked right or fit right. Looking at the MerrSon versions it seemed the antenna were laying on the barrel directly and when I tried this it all lined up perfectly.
I shaved the sides off the Track and only used the center vertical part for my build with the antenna on either side resting on the barrel. This way the height above the FH and barrel all make sense and line up perfectly. Deadbolt confirmed this in 3d as well.
I decided to cut the track at an angle like a traditional front sight because no images show it being left square.
The images you posted of Han show a sight with either one or both antenna intact with the "long" rod/post. Likely prior to any firing test.
The outdoor images of Han test firing the blaster show the left antenna missing with the right intact. My guess is that after the first shot the part flew off never to be seen again.
The post production images below show only the right antenna "head" being intact and the rest of the material there is glue residue IMO.
I replicated all the optional versions and can swap it out if needed but keep the post production look as it is the last handled version.
I do not think the "rod" from the right antenna was cut out of the image because it appears the same in the top view image and if you look close you can see a rough surface behind the head which is glue IMO
The "shape" of the glue impression can be seen if you look close. Imagine a hard glue filling the space under the antenna head and rod. Remove the antenna and you have a negative impression f the space. It seems to fit the model IMO.