GG&G Made in USA Picatinny 1913 Scope Rail Mount. This item fits newer series Ruger Mini-14 Mini14 Ranch ( .223 Caliber ) Rifles. Attaches directly to the factory scope bases. Does not fit older version rifles that do not have the 2 short square shaped Ruger factory scope mount bases machined on the top of the rifle. This mount allows you to attach a wide variety of Mil_Std 1913 Picatinny / Weaver style scopes, red dots and reflex sights to your rifle. Bolt-on installation. Brand New Item