Winchester's XPR Ring/Base Set is an integrated piece that mounts directly to the receiver. The tight connection and one-piece design lock in your scope for consistency and accuracy. It is manufactured with absolute precision from 7000-series aircraft grade aluminum alloy, while holding today's high-magnification scopes without shifting zero.
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.P65Warnings.ca.gov