At approx. 39 minutes 27 seconds, a crew member's head can be seen as he runs behind the actor being shot.
In this film it is stated that no one possessed a trapdoor rifle and the rifle will be introduced by the army as a new rifle. But in the scene around 54 minutes at the war-dance you can clearly see that more Indian's are loading trapdoor Springfield rifles.
The Indian horses all appear to have regular saddles under their blankets.
The Indian teepees are clearly made of canvas, with regular tent-like tie straps hanging beside the doorways.