BudsGunShop.com - Receiver drilled and tapped?

yes it is drilled and tapped

Josh, yes, it is "Drilled and Tapped" and ready for a Mount or Rings for Scope or other Optic addition.

it is drilled and tapped to use the included Combination scope base adapter for both Weaver-style and .22 tip-off scope mounts Detachable 10-round rotary magazine features a unique rotor to separate cartridges and provide reliable feeding.
Legendary action, a tried and true Ruger design, ensures consistent, reliable performance.
Cold hammer-forged barrel is locked into the receiver by a unique, two-screw, V-block system.
Positive, push-button, cross-bolt manual safety.
*********Combination scope base adapter for both Weaver-style and .22 tip-off scope mounts included.
Easy-to-use extended magazine release provides smooth, no-fuss removal of flush-mounted magazine.
Heat-stabilized, glass-filled, polymer trigger housing assembly is precision made of high-tech material for improved manufacturing tolerances, impact and abrasion-resistance and an unmatched ability to withstand the elements.
Sling swivels and flat buttplate.