Remove the 4 screws from both rings. Place the scope in the ring halves and re-insert recoil key. Start all 4 screws on both rings and move scope with rings to your scope bases. Place rings onto the bases with the recoil keys in the slots. Push each ring towards the muzzle to seat the recoil key and tighten only the bottom screws to 25in/lb* max. Adjust eye relief and level the reticle. Once both are correct, tighten the top screws on both rings to 25 in/lb* max.