(Note that the 12.7mm Ho-103 and Ho-104 machine guns are also known as the "Type 1 machine gun", but are actually a 12.7mm adaptation of the M1919 Browning machine gun in fixed and flexible mountings, respectively.)
The reference sentence discusses a 12.7mm Ho-103 and Ho-104 machine gun, which is also known as the "Type 1 machine gun". However, it clarifies that these are not genuine Type 1 guns but rather modifications of the M1919 Browning machine gun in fixed and flexible configurations.