They have a project going in which they take photos from the point of view of a shooter looking through the sights. The photos are of both common and rather rare firearms. They have everything from a Springfield 1903A3 to a Danish Madsen (Portuguese Contract) to a French Chauchat Mle.1915.
You can see some of them in the photo below:
C&Rsenal also has a number of prints of various firearms stripped down to the individual component level. These are also really cool.
If you have an interest in old firearms, I’d suggest checking them out. You won’t be disappointed.