A very considerable picatinny rail for your 10/22 receiver is definitely this Ncstar rail. Avoid any conflict with your iron sight and skip drilling. You simply need to screw it to the already existing holes on the receiver and enjoy a gun with full of options.

Features:

• Ruger 10/22 See-Through Receiver Picatinny/ MIL-STD 1913 Rail Mount, sleek new GEN 2 design
• Shooter is still able to use the factory iron sights, by looking through sight channel below the Picatinny Rail.
• Mounts onto the top of the 10/22 receiver utilizing the pre-drilled holes on the receiver
• Includes mounting hardware (no rifle modifications necessary)
• Black Anodized Aluminum Construction

Specifications:

• Manufacturer: Ncstar
• Code: MRUHB1022V2
• Color: Black
• Length: 4.7 inch
• Weight: 1..5 Oz