Ruger 30mm Med(4) Sts (4k30) Sld Ind

The Ruger 30mm Medium Scope Ring with Stainless Finish (model 4K30) is a factory-engineered mounting solution designed for shooters who demand reliable, precise optic alignment. Built to accommodate 30mm scope tube diameters with a 42mm objective bell, this genuine Ruger accessory fills a critical role in the tactical rifle setup—bridging your receiver rail and premium glass with zero compromise. Whether you're building a duty rifle, precision platform, or long-range hunting rig, proper scope rings are non-negotiable for accuracy and reliability in the field.

Constructed with a durable stainless steel finish, the Ruger 30mm Medium ring resists corrosion in harsh weather and sustained field use—critical for law enforcement and military applications where equipment degradation can compromise mission success. The medium height specification positions your optic at the optimal sight plane relative to your barrel axis, ensuring natural cheek weld and proper eye relief without obstruction. Ruger's factory-direct manufacturing ensures dimensional consistency and clamping geometry that protects expensive glass from shifting or binding under recoil, maintaining zero integrity through thousands of rounds.

This ring suits AR-platform rifles, bolt-action precision rifles, and other modern platforms using Picatinny or Weaver rails with standard 1.0-inch or 1.375-inch ring center spacing. Installation requires basic gunsmithing—torque the caps evenly in a cross pattern to manufacturer specs to avoid scope tube deformation. Sold individually, you'll need a matching pair (or set of four for quick-detach systems) to complete your mount. Tactical professionals and civilian marksmen alike trust Ruger factory rings for their straightforward engineering and proven track record under demanding conditions.