Zenitco B-51 Receiver Cover Rail - CNC Aluminum Picatinny Top Rail for Large-Format Platforms
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- $699.00
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Zenitco B-51 Receiver Cover Rail - CNC Aluminum Picatinny Top Rail
Genuine Zenitco | Fully CNC-milled D16T aluminum | 19-slot Picatinny rail | Clears the iron-sight line | Black, Desert & Golden khaki
In short: a genuine Zenitco B-51 - a fully-milled D16T aluminum mount that forms a 19-slot numbered Picatinny rail over the receiver cover of large-format platforms. It is shaped to clear the iron-sight line, so you keep your standard sights while adding a red dot, magnified optic or light up top. Machined from D16T aluminum; about 225 g. Available in black, desert and golden khaki, with the full mounting kit included.
The B-51 replaces (or sits over) the receiver cover and gives a long, rigid Picatinny platform right where you want your optic. Its 19 numbered slots make it easy to return an optic to the same position, and the rail is set at a height that does not obstruct the standard mechanical sights. The whole assembly is fully CNC-milled from D16T aluminum for a rock-solid, repeatable zero.
A genuine Zenitco factory part - a complete kit of fully-milled D16T aluminum components with a wear-resistant coating. It measures about 257 x 59 x 62 mm and weighs about 225 g. Rated for a working temperature range of -50 to +50 C.
Compatibility Note: Designed for the receiver-cover section of compatible large-format platforms. Ships as a complete kit with a hex key, spacer, axis pin, axis punch, two washers, two cotter pins and a manual.
Key Advantages
- Genuine Zenitco factory part with exact original fit
- 19-slot numbered Picatinny rail for repeatable optic placement
- Clears the iron-sight line - keep your standard sights
- Long, rigid mounting platform over the receiver cover
- Complete hardware kit - axis pin, punch, washers, cotter pins, hex key
- Fully CNC-milled D16T aluminum - strong and durable
- Available in black, desert and golden khaki
Technical Specifications
| Brand | Zenitco |
| Part Type | Receiver-cover Picatinny top rail |
| Fits | Receiver-cover section of compatible large-format platforms |
| Rail | 19-slot numbered Picatinny (MIL-STD-1913) |
| Iron Sights | Rail clears the standard iron-sight line |
| Material | D16T aluminum alloy (fully CNC-milled), coated |
| Weight | ~225 g |
| Dimensions | ~257 x 59 x 62 mm |
| Included | B-51 rail, spacer, axis pin, axis punch, washers x2, cotter pins x2, hex key, manual |
| Operating Temp | -50 to +50 C |
| Finish | Black / Desert / Golden khaki |
| MPN | Zen-B-51 |
| Condition | New |
Frequently Asked Questions
What is the Zenitco B-51?
It is a genuine Zenitco receiver-cover rail - a fully-milled D16T aluminum mount that forms a 19-slot Picatinny rail over the receiver cover of compatible large-format platforms.
Does it block the iron sights?
No - the rail is set at a height that clears the standard iron-sight line, so you can keep using your mechanical sights.
What can I mount on it?
A red dot, a magnified optic, a light or other Picatinny-mounted accessories. The 19 numbered slots make it easy to return an optic to the same position.
What is included?
The B-51 rail, a spacer, an axis pin and punch, two washers, two cotter pins, a hex key and a manual.
What is it made of?
Fully CNC-milled D16T aluminum alloy with a wear-resistant coating. It weighs about 225 g.
Is this a genuine Zenitco part?
Yes - it is an original Zenitco part with guaranteed US delivery.
Add a rock-solid optics rail - order the genuine Zenitco B-51.
In Stock | Guaranteed US Delivery | Genuine Zenitco Part
Related: B-50 Quad-Rail Handguard Kit
In Stock | Guaranteed US Delivery | Genuine Zenitco Part
Related: B-50 Quad-Rail Handguard Kit
General
Brand
Zenitco
Manufacturer Part Number (MPN)
Zen-B-51
Condition
New
Intended Use
Sport shooting / Training
Material
D16T aluminum alloy (fully CNC-milled), coated
Color / Finish
Black / Desert / Golden khaki
Weight
225 g (+/- 5 g)
Dimensions (L x W x H) mm
257 x 59 x 62 mm (+/- 5 mm)
Mounting & Rails
Mounting
Rail height clears the standard iron-sight line; mounts over the receiver cover
Rail Type
Receiver-cover Picatinny top rail (19 numbered slots) for large-format platforms
Function
Complete kit: rail, spacer, axis pin, punch, washers, cotter pins, hex key
Recommended
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