Hammerli made many very close copies of PP-type target pistols under Walther license in the 1950s and 60s when it was an independent concern in Lenzburg. Hammerli later became a SIG subsidiary for several decades. In later years it produced for SIG a .22 pistol called the Trailside, a long-barreled PP-style target and sport pistol completely redesigned and reengineered to be produced cheaply with new materials and technology. When SIG got out of the gun business Hammerli disappeared for a while, until acquired by Umarex a few years ago.
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