Did the Mazar i Sharif arsenal produce small arms, or the mark conventionally known as the "Mazar i Sharif" indicated that a weapon was just stored and provenanced there? The mark resembles the Hazrat Ali temple, aka the Blue Mosque.
http://en.wikipedia.org/wiki/Mazar-i-Sharif
http://en.wikipedia.org/wiki/Shrine_of_Hazrat_Ali