Join or Renew Your COSC Membership

Application to Download:  Membership Application New/Renewal

October 30, 2022

If you are interested in Joining COSC, we do require you to have a sponsor that is an Active Club member who has been with the club for more than 1 year.  If you don’t currently know someone who is a member, we encourage you to look at our club calendar tab for upcoming open events and then come out and meet some of our fantastic members.  If you have questions, please feel free to email us at the following email address – ; please include your name and contact phone number and we will respond to you as promptly as possible. 

Due to the recent problems the club has had on the ranges and the lack of member participation in the upkeep of the club, the Board of Directors has decided to place a cap of 600 members. Also we will no longer be taking walk-ins off the street; you will have to be sponsored by a member of the Club in good standing for one year or more.


Belonging to COSC includes these privileges and benefits:

• Seven-day-a-week access to all ranges during shooting hours, year-round, except when an event is being held
• Hunting access on COSC property (40 acres) during firearm and archery hunting seasons.
• Member discount rates on 3D archery and regular trap shooting.
• Member discount rate on clubhouse rental (some restrictions apply).
• Lots of opportunities to participate in club programs and activities.
• Monthly informative Newsletters.

Initial membership costs $135
An annual renewal membership costs $135
Senior membership $72.50
All memberships expire on December 31st

There is a $72.50 (half-off full price) discount on the following year’s membership for those members who donate at least 15 hours of time working on Club projects and activities.

Discounts are also available for seniors age 65+ who have been members in good standing for the previous five years. Your cost is $35.00

Your membership application is subject to approval by the COSC Board of Directors after completion of an orientation presentation, which is scheduled before each Membership and Board of Directors meeting. You’ll be contacted by the membership committee to schedule your orientation.

Any person who is legally barred from owning or using firearms is not eligible for membership.

You can submit the membership application by printing it (link at the top of this page), completing it, and sending it and your annual membership dues in the mail to:

COSC Membership
PO Box 375
Dimondale, MI 48821


If you have moved, please get your new address to the above email address to make sure you continue to receive your monthly newsletter.

Membership Committee:

Kirk Ginther – Chair and who receives all member applications and dues

Sharon Whaley and Don Uramkin – Orientation Presenters responsible for new member orientation and bringing new members to the Board for approval.

Your Membership Committee is here to serve you. We welcome comments and suggestions at any time.

If you have not had a response to your application, please contact the Membership Committee chair, Penny Batten, for a status on your application. See our Contact page for emails and phone numbers.