Zenitco B-21U Handguard Rail - CNC D16T Aluminum Handguard for Vityaz-SN / Saiga-9 / TR9 Paradox Carbines with Bottom Picatinny & Side Bazis Rails (Black, Desert & Golden Khaki)
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Zenitco B-21U Handguard Rail
Genuine Zenitco | CNC-milled D16T Picatinny forend for Vityaz-SN, Saiga-9 and TR9 Paradox | 130 g | Black, Desert, Golden khaki
In short: the Zenitco B-21U is a CNC-milled D16T aluminum handguard that replaces the factory forend on Vityaz-SN, Saiga-9 and TR9 Paradox 9mm carbines, adding a full-length top Picatinny rail plus side and bottom mounting points for optics, lights and grips.
Overview
The B-21U installs in place of the standard handguard and turns the forend into a full accessory platform. Its milled D16T body keeps weight low (130 g) while the open skeletonized sides aid cooling and let you route wires or add rail sections where needed.
It is a genuine Zenitco part, produced on the same tooling as the wider B-series rail family - see also the B-19, B-31 and B-10M rails for AK-pattern platforms.
What's in the Box
| ✓B-21U handguard rail | x 1 |
| ✓User Manual | x 1 |
Compatibility: fits PP-19 Vityaz-SN, Saiga-9 and TR9 Paradox 9mm carbines. Installs in place of the standard handguard - please confirm your carbine variant before ordering.
Key Advantages
- CNC-milled D16T aluminum - stiff, durable and light at 130 g
- Full-length top Picatinny rail - mount optics, red dots and iron sights
- Side and bottom mounts - add lights, aiming modules and forward grips
- Skeletonized body - aids cooling and keeps weight down
- Available in Black, Desert and Golden khaki
Technical Specifications
| Brand | Zenitco |
| Type | Handguard rail (forend replacement) |
| Material | D16T aluminum alloy, CNC-milled, anodized |
| Function | Replaces the factory forend; adds Picatinny rails for optics, lights and grips |
| Interface | Full-length top Picatinny rail + side and bottom mounting points |
| Fits | PP-19 Vityaz-SN, Saiga-9, TR9 Paradox |
| Weight | 130 ± 10 g |
| Dimensions (L x W x H) | 165 x 38 x 40 mm (± 5 mm) |
| Operating temperature | -50 to +50 °C |
| Colors | Black, Desert, Golden khaki |
| Warranty | Manufacturer warranty (storage + service life): 60 months |
| MPN | Zen-B-21U |
| Condition | New |
Frequently Asked Questions
Which carbines does the B-21U fit?
It is made for the PP-19 Vityaz-SN, Saiga-9 and TR9 Paradox 9mm carbines, replacing the standard handguard.
What accessories can I mount on it?
The full-length top Picatinny rail takes optics, red dots and sights, while the side and bottom mounting points accept lights, aiming modules and forward grips.
Does installation need a workshop?
No special tools are required for most builds - it installs in place of the factory forend. Always follow the included manual and check your specific carbine variant.
What is the difference between the B-21U, B-21L and B-21M?
The B-21L uses Bazis guides on all three sides, the B-21M forms three Picatinny sections, and the B-21U combines a bottom Picatinny section with side Bazis guides.
Which carbines does it fit?
The Vityaz-SN, the Saiga-9 and the TR9 Paradox, in place of the standard lower handguard.
Is this a genuine Zenitco part?
Yes - it is an original Zenitco B-21U with guaranteed US delivery.
Genuine Zenitco B-21U - milled D16T handguard rail, ready to ship.
In Stock | Guaranteed US Delivery | Genuine Zenitco Part
In Stock | Guaranteed US Delivery | Genuine Zenitco Part
General
Brand
Zenitco
Manufacturer Part Number (MPN)
Zen-B-21U
Condition
New
Intended Use
Handguard replacement / accessory mounting
Material
D16T aluminum alloy; bottom Picatinny + two side Bazis rails
Color / Finish
Black / Desert / Golden Khaki
Mounting & Rails
Mounting
For Vityaz-SN / Saiga-9 / TR9 Paradox carbines (standard handguard position)
Rail Type
One-piece CNC-milled D16T aluminum handguard for Vityaz-SN / Saiga-9 / TR9 Paradox carbines; bottom Picatinny rail + a Bazis guide rail on each side; 130 g; (165x38x40) mm; -50 to +50 C; 60-month warranty
Function
Zenitco B-21U one-piece milled D16T aluminum handguard with bottom Picatinny and side Bazis rails for Vityaz-SN / Saiga-9 / TR9 Paradox, black / desert / golden khaki
Recommended
B-21U, Zenitco, handguard, forend, Picatinny, Bazis rail, Vityaz-SN, Saiga-9, D16T, Bazalet