Abstract: An automatic extraction device for extracting a liquid substance (e.g., oil) from plant material, is disclosed. The device comprising: an ethanol source, a mixing tank, in liquid connection with the ethanol source, comprising: an entrance for providing the plant material; a mixer, and an exit for extracting a mixture of the ethanol and the liquid substance, an evaporation system, in liquid connection to the mixing tank's exit, for evaporating the ethanol; and a condenser, for condensing the evaporated ethanol, the condenser. In some embodiments, the condenser may include: an entrance in gas connection with the evaporation system; a housing having a maximum external volume of at most 1 liter; and an internal array of heatsinks, located inside the housing, providing a surface-to-volume ratio of 4-0.5 [1/mm]; and a collecting tube, in liquid connection to the mixing tank, for collecting the condensed ethanol.

Abstract: A magazine follower is disclosed. The magazine follower may include: a magazine spring receptacle having, a bullet support surface having a first portion and a second portion, each bullet support portion is shaped to support a bullet in the magazine. Therefore, the second portion protrudes from the first portion. The magazine follower further includes a metallic flange, extending from the first portion and positioned in the front of the bullet support surface, in a direction facing a chamber of a firearm when the magazine follower is assembled in a magazine and the magazine is inserted into the firearm.