Keystone 1903-A3 Scope Base Features The Keystone Sporting Arms Scope Base is machined to mount directly onto the Springfield 1903-A3 receiver giving the rifle a stable platform for a riflescope. The black finish matches the dark metal furniture typical of these military-pattern rifles keeping the overall look consistent and unobtrusive. Because the base is purpose fit to the 1903-A3 footprint installation does not require drilling or permanent modification beyond the standard mounting screws. This kind of dedicated fitment gives shooters confidence that the base will seat correctly and hold zero under recoil. Built by Keystone Sporting Arms as part of their accessory lineup for classic bolt action platforms the base is a lightweight accessory weighing only a fraction of a pound making it easy to ship and install without added bulk to the rifle. It pairs with standard scope rings to complete a mounting system suited to hunting or collector use. Owners of a Springfield 1903-A3 looking to add a modern optic while preserving the rifle s vintage character will find this base a practical first step. For sale at GrabAGun it is an affordable way to bring a historic action into service with contemporary glass. Keystone 1903-A3 Scope Base Specifications Manufacturer: Keystone Sporting Arms Model: 1903-A3 Springfield Scope Base Type: Scope Base Color: Black Compatible Hosts: Springfield 1903-A3 Weight: 0.1 lbs Available At: GrabAGun