Zenitco B-5U QD Riser Mount
Genuine Zenitco | Picatinny-to-Picatinny riser adapter | See-through optical channel to keep backup sights visible | Quick-release lever | Black
In short: the Zenitco
B-5U is a riser with a
quick-release rail that clamps onto a
Picatinny rail and forms an
optical channel beneath the raised rail, so backup mechanical sights stay visible through the mount. It sits between the compact
B-5 and the taller
B-5VU risers.
Overview
The B-5U is the extended member of the Zenitco riser family. Like the B-5 it is a Picatinny-to-Picatinny adapter with an optical channel underneath, so the standard iron sights remain usable with an optic installed above.
The longer base spreads the load over more rail slots, which suits heavier optics and night devices, and gives more freedom in positioning for correct eye relief.
A quick-detach lever with a safety catch clamps the riser to the rail. Fitting and removal need no tools, and the clamp returns the mount to the same slot, so a rough zero survives the cycle. Play can be taken out with the adjustment screw behind the catch.
| ✓Zenitco B-5U Riser Mount | x 1 |
| ✓User Manual | x 1 |
Compatibility: mounts on any standard Picatinny rail and accepts any Picatinny-footprint optic, red-dot platform, thermal or accessory on its raised rail. The open channel underneath keeps a lower optic or backup sights in view through the riser.
Key Advantages
- See-through optical channel keeps backup mechanical sights usable
- Raises an optic to a comfortable height on a Picatinny rail
- Quick-release lever - tool-free mounting and removal, repeatable position
- Clamps to any standard Picatinny rail
- CNC-milled D16T aluminum alloy - light at 73 g
Technical Specifications
| Brand | Zenitco |
| Type | Picatinny-to-Picatinny riser adapter (see-through channel) |
| Mount | Picatinny, quick-release lever |
| Material | D16T aluminum alloy (CNC) |
| Dimensions | 110 × 40 × 26 mm (± 2 mm) |
| Weight | 73 g (± 2 g) |
| Colors | Black |
| MPN | B-5U |
| Condition | New |
In the Box
- B-5U riser with quick-release lever
- User manual
Frequently Asked Questions
What is the B-5U for?
It raises an optic on a Picatinny rail and forms an optical channel underneath, so backup mechanical sights remain visible through the mount.
How does it attach?
With a quick-release lever onto any standard Picatinny rail - no tools needed.
How is it different from the B-5 and B-5VU?
The B-5U sits between them - a medium-length riser with a see-through channel; the B-5 is compact and the B-5VU has a longer top rail.
How is the B-5U different from the B-5?
It is longer - 110 mm against 80 mm - which spreads the load of heavier optics and gives more positioning freedom.
Does the B-5U fit any Picatinny rail?
Yes. It clamps to any standard Picatinny section with enough length to take the base.
Is this a genuine Zenitco part?
Yes - it is an original Zenitco B-5U with guaranteed US delivery.
Related products: the
B-5 riser, the
B-5VU V2.0 extended riser, and the
B-25U adapter, all by Zenitco.
Genuine Zenitco B-5U quick-release Picatinny riser with see-through channel.
In Stock | Guaranteed US Delivery | Genuine Zenitco Part
General
Brand
Zenitco
Manufacturer Part Number (MPN)
Picatinny-to-Picatinny riser adapter (see-through channel), quick-release lever
Condition
New
Intended Use
Riser that raises an optic on a Picatinny rail and forms a see-through channel so backup sights stay visible; quick-release lever
Material
D16T aluminum alloy (CNC); Picatinny quick-release mount
Color / Finish
Black
Weight
73 g (+/- 2 g)
Dimensions (L x W x H) mm
110 x 40 x 26 mm (+/- 2 mm)
Operating Temperature
-50 to +50 °C
Mounting & Rails
Mounting
Mounts on any standard Picatinny rail; accepts any Picatinny-footprint optic, red-dot platform, thermal or accessory; open channel keeps backup mechanical sights visible
Rail Type
Zenitco B-5U Picatinny-to-Picatinny riser adapter; CNC D16T aluminum; quick-release lever; see-through optical channel; 110 x 40 x 26 mm; 73 g
Function
Zenitco B-5U QD riser mount, see-through Picatinny-to-Picatinny riser adapter with quick-release lever, black
