The Burris Fullfield E1 3-9x40mm is a dedicated straight-wall cartridge riflescope designed specifically for the .450 Bushmaster.
- Type: Variable Power Riflescope
- Magnification: 3-9x
- Objective Diameter: 40mm
- Reticle: .450 Bushmaster Ballistic Plex
- Tube Diameter: 1 inch
- Eye Relief: 3.1–3.8 inches
- Coating: Hi-Lume Multicoated
- Finish: Matte Black
- Weatherproofing: Nitrogen Purged, Waterproof, Fogproof
- Includes: Scope, Lens Covers
