These look pretty good. A couple potential issues though.
![](https://photos.kitmaker.net/news/30334/35539---leaflet.jpg)
On the M2 w/blank adapter set, the spare barrels should not have the blank adapter attached. The blank adapter is a separate item that attaches to the barrel and is not installed on spare barrels. The additional barrels should not be used as spares. They could be used on other M2 bodies to make other guns w/blank adapters though.
![](https://photos.kitmaker.net/news/30334/35571---leaflet.jpg)
The "Soviet" tanker helmets are depicted in the pic as "modern" ones with 6 ribs on the top, but the 3D printed parts look to be WWII versions w/3 ribs on top.