Visible crew/equipment: As Hannibal and Murdock are coming over the wall of the jail in their hot-air-trash-bag chairs, you can see that the brick is a facade as the guard shoots at them. (41:25 / 41:39). (00:41:25)
West Coast Turnaround - S1-E10
Visible crew/equipment: As Hannibal calls the team to action and starts to walk off-camera, the shadow of the boom mic is on the ground behind him.
Visible crew/equipment: When the team comes out of the van, at the left of the screen, the shadow of the camera man is visible.
A Nice Place to Visit - S1-E14
Visible crew/equipment: As the van takes off after dropping Face and Murdock at the diner, the camera and crew are reflected on the side.
West Coast Turnaround - S1-E10
Visible crew/equipment: When the rig goes up on the hill and falls to the side, you can see the stuntman with a black helmet is driving.
Answer: They never use an M14. The nearly always use a Ruger Mini 14, a totally different weapon.
stiiggy