Abstract: A metal shock absorber, an assembly of a metal shock absorber and a media recording unit, and a media recording device are provided. The metal shock absorber has a pair of horizontal portions, a perpendicular portion connected between the horizontal portions, and a pair of limiting portions. Each of the horizontal portions has a first arcuate protrusion protruding towards another first arcuate protrusion. The perpendicular portion is perpendicularly connected between the pair of horizontal portions, and has an assembling arm. The limiting portions are disposed at opposite sides of the perpendicular portion that are not connected with the horizontal portions. Since the thickness, the tolerance and costs of the metal shock absorber are less than those of the conventional rubber shock absorber, the assembly of the metal shock absorber with the media recording unit has a favorable assembly reliability, and therefore costs of the recording device are effectively lowered.