Abstract: Embodiments of the present disclosure generally relate to a pivoting assembly, to tools including the pivoting assembly, and to their methods of use in, e.g., collecting lunar samples. One embodiment comprises a shaft coupled to a handle at one end and coupled to a pivoting assembly at the opposite end. The pivoting assembly may comprise a slotted axle, a locking rod having a head engageable with a slot of the slotted axle, and a release handle coupled to the locking rod. The release handle is movable to move the head of the locking rod into a locked position and an unlocked position. A rotatable arm is coupled to the pivoting assembly and is rotatable relative to the handle when the head of the locking rod is in the unlocked position.

Abstract: A charge tube assembly for a perforating gun includes a charge tube configured to receive an explosive shaped charge, and a first endplate configured to couple to a first end of the charge tube, the first endplate including a first faceplate coupled to a first body, wherein the first faceplate includes a first material and the first body includes a second material that is different from the first material.

Abstract: A charge tube assembly for a perforating gun includes a charge tube configured to receive an explosive shaped charge, and a first endplate configured to couple to a first end of the charge tube, the first endplate including a first faceplate coupled to a first body, wherein the first faceplate includes a first material and the first body includes a second material that is different from the first material.