These rails are perfect for mounting optics as well as any other picatinny style accessory. They add an extra mounting surface to any picatinny rail and also elevate the mounting surface 1/2." Made from aircraft quality aluminum and hardcoated to mil. specs.
Specifications:

Type
Model	Rail Extension
Dimensions
Size
Material	Aluminum
Action
Trigger
Safety
Thread Pattern
Finish
Bolt Type
Hand
Hammer Type
Capacity