Zenitco B-12 Upper Rail - CNC Aluminum Gas Tube Picatinny Rail (for B-10 / B-20)
- $119.00
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Frequently Asked Questions
Zenitco B-12 Upper Rail - Gas Tube Picatinny Rail (for B-10 / B-20)
CNC-Machined Hardened D16T Aluminum | Picatinny Above & Beside the Handguard | Iron-Sight Clearance | 87 g
The Zenitco B-12 is a CNC-milled rail that installs above the B-10 or B-20 handguards using their integrated side-mounted Picatinny rail. It provides additional mounting surfaces for modular accessories such as aiming and lighting devices.
Once installed, the B-12 forms Picatinny platforms both above and on the side of the upper handguard, expanding configuration options while keeping access to the standard mechanical sights.
Requires a B-10 or B-20 Handguard
The B-12 mounts onto the side Picatinny rail of a Zenitco B-10 or B-20 Classic-line handguard. It is not a standalone handguard.
| ✓Zenitco B-12 Upper Rail - CNC Aluminum Gas Tube Picatinny Rail (for B-10 / B-20) | x 1 |
Key Advantages
- Picatinny above and beside - more mounting surface for optics and lights
- Iron-sight clearance - does not obstruct factory mechanical sights
- Low weight - only 87 g
- High structural strength - hardened D16T aviation aluminum
- Simple install - clamps onto the B-10/B-20 side rail
Technical Specifications
| Material | Hardened D16T Aviation Aluminum Alloy (CNC-milled), coated |
| Product Code | B-12 |
| Weight | 87 g |
| Dimensions (L x W x H) | 100 x 50 x 61 mm |
| Rail Type | Picatinny above & beside the upper handguard |
| Mounts On | Side Picatinny rail of B-10 / B-20 handguard |
| Operating Temperature | minus 50 to plus 50 C |
| Warranty | 60 months |
What's Included
- (1) Zenitco B-12 Rail
- (1) Hex Key
- (1) User Manual
FAQ
Q: What does the B-12 mount on?
A: On the side Picatinny rail of a Zenitco B-10 or B-20 handguard.
Q: What does it add?
A: Picatinny mounting surfaces both above and on the side of the upper handguard for optics and lights.
Q: Does it block the iron sights?
A: No - it does not obstruct the factory mechanical sights.
Q: How does shipping work?
A: US orders are fulfilled and delivered through our partner's domestic US logistics network. Delivery is not express, but it is reliable and fully guaranteed.
Expand Your Mounting Options
In Stock | Guaranteed US Delivery | CNC-Machined Quality
Overview
The B-12 completes the upper half of a Zenitco handguard installation. It sits over the gas tube and forms a continuous Picatinny section in line with the receiver, so an optic, a magnifier or a night device can be placed well forward of the sight block.
The rail is milled from aluminum alloy and ties into the B-10 and B-20 handguard bodies, which carry the load and keep the assembly rigid. Because it clamps to the handguard rather than to the gas tube alone, the mounting line stays stable under recoil.
The B-12 is a legacy part of the B-10 and B-20 generation. On current builds the same job is done by the B-19, B-19N, B-31 and B-31N upper rails, so check which handguard revision you own before ordering.
Zenitco Specs
General
Mounting & Rails
Recommended
Zenitco, B-12, Upper Rail, Gas Tube Rail, Picatinny, B-10, B-20, CNC Aluminum, Sport Carbine, Bazalet