Zenitco B-19RPK Picatinny Upper Rail for B-20U, B-20L and B-23L
- $159
Available Options
In short: Zenitco B-19RPK is a D16T upper rail that fastens with four supplied M5×7 screws to B-20U V2.0/V2.1, B-20L V1.0/V1.1 or B-23L. It creates a Picatinny interface above the gas chamber without blocking the original mechanical sight line.
Compatibility hierarchy
| Required lower component | Compatible versions | Result |
|---|---|---|
| B-20U | V2.0 or V2.1 only | Upper Picatinny interface |
| B-20L | V1.0 or V1.1 | Upper Picatinny interface |
| B-23L | Current documented version | Upper Picatinny interface |
Selection checkpoint: B-19RPK is not compatible with first-generation B-20U. Check the engraving for B-20U V2.0 or V2.1 before ordering.
Documented host configurations
The manufacturer compatibility record lists RPK with an original folding or fixed stock, Saiga 308 Win. isp.61, Saiga 308 Win. isp.46, Vepr-1V VPO-213, VPO-213L, VPO-148 and VPO-156. Each route remains conditional on a compatible B-20U V2.0/V2.1, B-20L V1.0/V1.1 or B-23L lower component.
Technical specifications
| Input interface | B-20U V2.0/V2.1; B-20L V1.0/V1.1; B-23L |
|---|---|
| Output interface | Upper Picatinny rail |
| Material | Hardened D16T aluminum alloy, machined construction |
| Dimensions | 46 × 42 × 95 mm, tolerance ±5 mm |
| Weight | 65 ± 5 g |
| Fasteners | Four M5×7 screws |
| Operating temperature | −50 to +50 °C |
| Finish options | Black; Desert; Golden khaki |
Installation
Position B-19RPK on the compatible lower component and secure it with the four supplied M5×7 screws. Confirm the lower-component version before installation; first-generation B-20U is excluded.
What's in the Box
| Zenitco B-19RPK in the selected finish | × 1 |
| M5×7 screws | × 4 |
| Operating manual | × 1 |
Frequently asked questions
Does B-19RPK fit every B-20U?
No. It fits only second-generation B-20U marked V2.0 or V2.1.
Which B-20L versions accept it?
The manufacturer documents both B-20L V1.0 and V1.1.
Can it be installed on B-23L?
Yes. B-23L is one of the three documented lower-component families.
Are mounting screws included?
Yes. The delivery set includes four M5×7 screws.
Zenitco Specs
General
Mounting & Rails
Kit Contents
Care & Chemicals
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