Czech ZH-29

The ZH-29 was a semi-automatic rifle developed in Czechoslovakia during the late 1920s and used by the Chinese National Revolutionary Army. The ZH-29 is one of the first successful self-loading rifles in service.

The ZH-29 is a gas-operated service rifle with a tilting-bolt locking system similar to that which would be later used in the Sturmgewehr 44; although while the bolt of the German gun tilts vertically, that of the ZH-29 does so to the left side. Externally the most distinctive feature is that the barrel is offset at a slight angle to the receiver to compensate for this. Also unusually, the rifle uses an aluminium barrel jacket.

A version chambered in .276 Pedersen was submitted to US Army trials but was unsuccessful.