Asalaam Alai kum WA rehmattulla he WA barakaa tahu,
The Zulfiqar is a double headed scimitar given to the successor of Prophet Muhammad (S.A.W) who is Imam Ali (A.S). It was given by the Prophet.
In common Shia belief, the Zulfiqar was passed down from Imam to Imam and it is now currently with the 12th Imam, Imam Mehdi (A.S) who is currently in hiding.
Answer 2
There is no authentic details available .
Zulfiqar weight 40Kg
The Sword of 1st Hazrat Imam ALI (A.S) which was came from Heaven and was transfer to 3rd Imam Hazrat Imam HUSSAIN (A.S) by His father Hazrat ALI (A.S). After Imam HUSSAIN (A.S) was killed in the battle of Karbala it was taken back to the Heaven. When 12th Imam Mohammad Mahdi (A.S) (ALLAH knows) will reappear the sword (zulfiqar) will be shining in his hand Insha ALLAH.
HAZRAT ALI (R.A) 's sword (ZULFIQAR) is a heavenly sword used by HAZRAT ALI and passed on to IMAM HUSSAIN (R.A) After IMAM HUSSAIN (R.A) was killed in the battle of KARBALA it was returned back to heaven. So no one really knows except HAZRAT ALI (R.A) His son IMAM HUSSAIN (R.A) or IMAM MAHDI who is not yet to be re-appeared.
Imam Ali's Sword The Zulfiqar was given to him during the battle of Uhud when his sword broke while defending the prophet after the others fled and hid in the mountains when the quraysh attacked from behind because the people did not listen to the prophet's command and decended from the mountain to collect the remains. When Imam Ali's sword broke the Propher SAW said ask The One who you are fighting for, surrounded by enemies defending the Prophet SAW, Imam Ali A.S cried out to Allah SWT and Gibraeel decended to earth with Al Zulfiqar the Sword. The sword then went on within the family of Aaimma e masoomeen and is now with the 12th Decendant the 12 Imam the Imam of our time Imam e Zamana - Imam Mehdi A.S. The Zulfiqar e Haidery (the sword) will be one of the signs to recognize Imam Mehdi A.S
Zulfiqar Ahmad was born in 1979.
Zulfiqar Ahmed was born in 1926.
Mohsin Zulfiqar was born in 1948.
Zulfiqar Ali Bukhari was born in 1904.
Zulfiqar Ali Khosa was born in 1935.
Zulfiqar Mirza was born on 1954-01-12.
Zulfiqar Shah was born on 1977-01-01.
Zulfiqar Ahmad Dhillon died in 2009.