Vector Optics 15B Long Picatinny-(Weaver) Riser Rail Base – High-Clearance, Saw-Through Riser for Versatile Sight Mounting
The Vector Optics 15B Long Picatinny (Weaver) Riser Rail Base is engineered for shooters seeking enhanced mounting flexibility and improved sight visibility. Built from high-quality aluminum alloy in a durable matte black finish, this riser raises your optics with precision—making it an excellent option for mounting magnifiers, EOTech-style holographic sights, or backup iron sights on Picatinny/Weaver rails. Its elongated “see-through” design with 14 slots allows for optimal eye relief adjustment and rail space utilization.
Main Features
- 21 mm Picatinny (Weaver Compatible) Top Rail with 14 Slots: Offers versatile positioning and is compatible with most standard mount accessories.
- Long 145 mm (5 3/5") Length: Extends over a significant rail portion, enabling easy co-witnessing and flexible optic placement.
- 16.5 mm (0.65") Height: Elevates your red dot or magnifier off the rail for better eye alignment and clearance.
- Robust 155 g (5.5 oz) Aluminum Construction: Lightweight yet rugged enough for real-fire use conditions.
- See-Through Style: Features cut-out sidewalls for reduced weight and improved visibility of underlying rail segments.
- Durable Black Matte Finish: Minimizes glare and enhances durability for tactical or field use.
Ideal Applications
Magnifier or Reflex Sight Setup
Raise your rear sights or red dot to co-witness or quickly switch between optics by mounting a magnifier behind your primary optic—easy with the higher platform provided by this riser.
Backup Iron or Elevated Sight Placement
Use the riser to mount backup sights offset above and behind low-profile optics, supporting rapid transitions without interference.
Accessory Positioning Flexibility
The length and slot count allow for adaptable placement of lights, lasers, or offsets without crowding the rail section.
Mechanical & Build Highlights
- High-grade aluminum alloy keeps weight low while maintaining structural integrity under recoil.
- Precision machining ensures flush engagement with Picatinny/Weaver rails, preventing canting or misalignment.
- See-through cutouts reduce weight and allow visual access to underlying components.
Included Components
- 15B Long Picatinny (Weaver) Riser Rail Base.
- Mounting screws (typically Torx or hex style, depending on the kit).
- Hardware tools (hex key or Torx wrench) for installation.
Technical Specifications
| Feature |
Specification |
| Top Rail Type |
21 mm Picatinny / Weaver-compatible, 14 slots |
| Length |
145 mm / 5.7" |
| Height |
16.5 mm / 0.65" |
| Weight |
155 g / 5.5 oz |
| Construction |
High-quality aluminum alloy |
| Finish |
Black matte |
| Design |
See-through style |
Summary
The Vector Optics 15B Long Picatinny (Weaver) Riser Rail Base elevates your optic mounting capabilities with a sleek, lightweight, and versatile riser. Its extended length and height are ideal for co-witnessing and magnifier setups, while the see-through aluminum construction enhances sightline clarity and rail access—a practical upgrade for tactical and precision builds.
