Welcome to Chief Okemos Sportsman’s Club!

COSC is a family-friendly gun and archery club in Dimondale, Michigan, located about 15 minutes west of Lansing.


To promote the safe and responsible use of firearms and archery activities in the Mid-Michigan area

C.O.S.C. Pledge

I give my pledge as an American to save and faithfully defend from waste the natural resources of my country, its air, soil, and materials, its forests, waters and wildlife.

Join or Renew your COSC Membership

Club Hours:  9:00 am to 1/2 hour before sunset, but not past 9:00 pm. Non-members MUST be accompanied by club members to use any of the shooting or archery ranges.

Club News

  • Non-members use of the COSC facilities is strictly prohibited. Members found using the ranges or facilities in a destructive manner may be subject to revocation of membership.
  • COSC Open House – September 14th 12:00 pm – 4:00 pm Come check out all of the shooting ranges, meet members, ask questions, enjoy the day.
  • See the September 2019 newsletter for upcoming club activities.