The post-war Bundeswehr cleaning kit designed for the Heckler & Koch G3 rifle. The original rifle is in 7.62×51 NATO, but this works with all .30-caliber guns, such as .308, 30-06, and 7.62x39. The bits and pieces are stored in a plastic box.
Heckler & Koch G3 was used by the German military from the 1950s until the ‘90s, after which it was replaced by the smaller caliber G36. The equipment comes in a plastic box that reveals two brushes that are clipped on the bore chain, which works just like the very popular BoreSnake. The aluminum pieces are soft enough that they don’t damage the rifling. Furthermore, there is a soft brush for spreading oil as well as a bottle for storing that oil. Ballistol is probably the classic brand. The original set also included a soft bore mop that attaches to the other end of the chain, but that seems to have disappeared on the way.
The measurement of the box are 13 x 8.8 x 3 cm (5.1” x 3.5” x 1.2”). Weight 155 g (5.5 oz). The length of the chain is 101 cm (39.8”).
Used German military surplus. The box may have minor scratches, dirt, and other signs of use. The oil bottle is most likely empty, or the oil is so ancient that it’s better to change it anyway. The soft mop is most likely not included, so you need to replace it.