Heaven's Blue -

The CZ-75 designed by the Czech's in the 70s became
a prominent weapon in the Soviet-Afghan War.

Throughout the war, the soviet's grew extremely cautious
upon discovering camps after camps of dead Soviets. What
alarmed was not the sheer number of bodies but that they all
shared something.

A blue .40 S&W.

A dying Soviet soldier in one of the many Camps was asked about who had done this.
The soldier could only reply, "Heaven's Blue". The distinct pattern and blue of the
CZ-75 became a sight that could only guarrantee heaven or in other words death.