The sleeves right now just touch the knuckles on my hand. That’s fine. Any longer would start to not look right. And the sleeves might bunch above my hands. I’m kind of bummed.
I’m going to think on it a few days, and see how I feel.

Okay, I sprang for the thing, in olive green.  But there’s a problem.
First the positives. This is beautiful jacket, wonderful sateen, and seems well-constructed. Less of a repro of an M-65 and more of a “take” on the original. Really nice to look at and handle. The dual zipper is an interesting touch, even though they got the zipper backwards.
When I was considering getting this, I was drawn to the longer arm length and narrower shoulder seam width. Done right, I think this gives a nice, fitted appearance. But I agonized over just how narrow the Large is in the shoulders at 18.7 inches. Every other measurement seemed right in the ballpark. I’m 5’10” and 190 lbs, fairly muscular in the shoulders and chest, slightly longer arms than average.
So the jacket arrived Thursday. And boy, it fits trim. The shoulder epaulet seam is only 5 and 3/4 inches. Fine. I throw it on. Looks great. Then I zip it up..
You know, the models in the pics aren’t  really doing anything. Just standing there looking cool. And it looks great if I just stand still. But dang it’s a narrow fit across the shoulders. The armholes are fairly high, and the sleeves are considerably narrower than an actual M-65. Also, the shoulder pleats are not as deep as an M-65. So, fully zipped up it’s a pretty confining fit in the shoulders for me, if I reach up or forward.
I’d size up I guess, but the 28” arms of an XL would be too much. For the money, I’d rather not have to go in immediately thinking it needs to be altered or shrunk.
So, I could keep it and not wear it zipped up, and hope the material relaxes a bit over time. Or return it for an XL. Or call it quits.

Any input is appreciated. Thanks.