Precision machined in the U.S.A., these integral scope mounts fit 30mm scope tubes without inserts or 1 inch with inserts and are constructed from quality steel and hard coated with a matte finish for rust resistance. These integral scope mounts, which fit all Model 700 Rifles, feature Z-2 alloy construction, which is 50% stronger than aluminum. The base and lower ring, available in black or silver, are all-in-one, creating a super strong design attached by 8 TORx grade tactical screws..