Zenitco B-51 19-Slot Picatinny Receiver Rail for PK, PKM and PKP
- $699
Available Options
In short: Zenitco B-51 is a machined D16T aluminum receiver rail for PK, PKM and PKP. It replaces the original receiver-cover hinge axis with the supplied axis and provides 19 numbered Picatinny slots while leaving the original mechanical sight line clear.
Compatibility hierarchy
| Compatible model | Required mounting point | Resulting interface |
|---|---|---|
| PK | Original receiver-cover hinge axis position | 19-slot Picatinny rail above the cover |
| PKM | Original receiver-cover hinge axis position | 19-slot Picatinny rail above the cover |
| PKP | Original receiver-cover hinge axis position | 19-slot Picatinny rail above the cover |
Selection checkpoint: The official compatibility list is limited to PK, PKM and PKP. Installation requires removal of the original cover hinge axis and use of the complete supplied axis hardware.
Mounting design
The B-51 assembly is machined from D16T aluminum alloy. Its supplied replacement axis establishes the mounting point above the receiver cover. The resulting Picatinny rail has 19 numbered slots and is positioned so the original mechanical sight line remains available.
Technical specifications
| Compatible models | PK; PKM; PKP |
|---|---|
| Mounting position | Original receiver-cover hinge axis position |
| Output interface | Picatinny, 19 numbered slots |
| Material | D16T aluminum alloy, machined |
| Dimensions | 257 × 59 × 62 mm, tolerance ±5 mm |
| Weight | 225 ± 5 g |
| Operating temperature | −50 to +50 °C |
| Finish options | Black; Desert; Golden khaki |
| Manufacturer warranty period | 60 months for storage and operation |
Installation outline
- Remove the original receiver-cover hinge axis using the supplied punch where required.
- Position the B-51 assembly and spacer at the documented mounting point.
- Install the supplied replacement axis, washers and cotter pins.
- Confirm secure seating and unobstructed operation of the original mechanical sights.
What's in the Box
| Zenitco B-51 rail in the selected finish | × 1 |
| Hex key | × 1 |
| Spacer | × 1 |
| Axis punch | × 1 |
| Replacement axis | × 1 |
| Washers | × 2 |
| Cotter pins | × 2 |
| Operating manual | × 1 |
Frequently asked questions
Which models accept the B-51?
The manufacturer documents PK, PKM and PKP.
How is the B-51 installed?
It replaces the original receiver-cover hinge axis with the supplied axis and associated hardware.
How many Picatinny slots does it provide?
The top interface has 19 numbered Picatinny slots.
Can the original mechanical sights still be used?
Yes. The manufacturer states that the installed rail does not obstruct their sight line.
Zenitco Specs
General
Mounting & Rails
Kit Contents
Care & Chemicals
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