The Weaver 99505 Extended Multi-Slot Base is a one-piece Picatinny-style scope base engineered for Remington 783 Long Action rifles. Constructed from 6061-T6 aluminum with a matte Type III hard coat black anodized finish, the base provides expanded placement for optics and related mounting options. Its multi-slot rail accepts Picatinny or Weaver style rings and delivers a robust, low-profile platform for optic mounting. The extended geometry is well suited to hunting and precision shooting applications where flexible ring spacing is required.
Key Specifications
- The mount type is To Receiver.
- This is a 1-piece base for a streamlined footprint.
- It features a Picatinny/Weaver multi-slot rail profile.
- No rings are included with the base.
- It ships as 1 piece for single-piece strength.
- Model designation is Extended Multi-Slot Base.
- Constructed from 6061-T6 aluminum for strength-to-weight balance.
- Protected by a black anodized matte finish.
- Designed to fit the Remington 783 Long Action.
- Provides an additional 1 inch of forward length for more mounting options.
The one-piece construction offers a rigid mounting platform that helps maintain repeatable alignment under normal use, while the extended rail gives installers room to optimize ring spacing for different optic profiles. Finished for wear resistance and built from aircraft-grade aluminum, this base is a straightforward solution for shooters who need dependable, no-nonsense mounting flexibility for hunting and precision applications.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




