At 34:55, when Madison pulls Chloe's gun from her car and points it at Chloe and Lucifer, a cocking sound is heard. The gun is a Glock, a striker-fired semi-auto pistol with no exposed hammer so there is nothing to operate on the gun to make such a sound.
At 31:50, there is moving camera equipment clearly visible at the top of the screen to the left of the light fixture in Lucifer's apartment.