Browning scope rings are machined from aircraft grade alloy giving you a precision lightweight highstrength optic mounting solution for your hunting rifle. These ultrarigid vertically split rings use oversized hardware for extra strength and ease of installation. Low Medium and High height rings are available for both 1 and 30mm diameter scopes. Compatible with twopiece scope bases for ABolt BAR and BLR and XLock bases for XBolt rifles. These scope rings require Brownings twopiece bases and are not compatible with a Picatinnystyle or Weaverstyle rail.