- Stainless steel finish
- Mounts rifle scopes with 1 inch tube diameter and up to 42mm objective lens diameter
- Durable and secure
- Medium mounting profile
The RUGER 4KO Single Scope Ring, #4, Medium, Stainless (90288) provides a secure and repeatable mounting solution for fitting a riflescope with a 1-in main tube and an objective lens diameter of up to 42mm. The 4KO scope ring is durable and designed to keep your rifle scope sighted accurately, even when attached to guns with heavy recoil. Sold as a single ring.