Chain shot a qualification score of 1174/1200 to enter the final and thereby secure India's seventh Olympic quota in shooting.
In the final, Chain finished eighth with a score of 403.7 but it was enough to fetch him the much sought after Olympic quota place after narrowly missing out on a place in the final in all the three preceding World Cups.
A delighted Chain Singh said, "It is my dream to win a medal for India at the Olympics. Today I am very happy because winning an Olympic quota place is the first step in that direction. There is still a lot of work ahead for me. I want to say a big Thank you to NRAI, the Army and Olympic Gold Quest for giving me tremendous support."
A couple of days ago, Prakash Nanjappa had bagged a quota place for India in the 50m air pistol event after finishing eighth.