The Austrian brand Glock needs no introduction. Pistols of this brand are the most widespread in the world, whether in the armed forces or among sport shooters. The G17 and G19 models have enjoyed great popularity for decades. Due to the high demand for off-the-shelf versions of this brand of pistols, the Glock has made agreements with other manufacturers (Umarex) to produce licensed replicas of airsoft and air pistols.