These  are the highest quality matched scope rings you can put on your rifle.  Precisely CNC machined to the tightest tolerances so lapping is not  required. These rings are made from 7075 aluminum to save weight and are  hard anodized to maintain strength and rigidity. The cross bolts and  nuts are machined from 4140 chromoly steel and hardened using a nitriding process.
Height is measured from top of base to center of ring.
Prices and weights are for a set of 2 rings.

1 INCH

• 0.790″ Low ( oz)
• 0.980″ Medium ( oz)

30MM

• .885″ Low (3.5oz)
• 1.00″ Medium (4.0oz)
• 1.20″ High (4.2oz)
• 1.375″ X-High (4.6oz)
• 1.50″ Ultra High (4.8oz)

34MM

• 1.050″ Low (weight: 4.2oz)
• 1.375″ X-High (weight 4.8oz)
• 1.50″ Ultra High (weight 5.1oz)

ATRS ring mounting instructions:

DO NOT LAP RINGS, it is not necessary.

DO NOT USE LOCTITE.

Mount rings on 1913 picatinny rail and torque cross bolt of rings to 55 inch lbs.

Once scope is mounted and eye relief is established, install top half of ring and torque 2 top screws to 21 inch lbs.

DO NOT OVER TORQUE RINGS.