The 9 cm mortar Type GR (German-Russian) was a World War I Russian mortar, developed circa 1915.

It was a variant of captured Austro-Hungarian mortars 9 cm Minenwerfer M 14.

[1] 12,519 9 cm GR mortars were produced in 1915-1917 in Russia.

[2] Its shell is comparable in power to the modern 81 mm mortar shell.

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