B-33 Receiver Cover Rail by Zenitco

B-33 Receiver Cover Rail by Zenitco is a precision-milled upper receiver cover with an integrated 170 mm Picatinny rail (17 numbered slots). Designed for AK-series rifles, it replaces the standard dust cover and offers a rigid, repeatable mounting platform for optics and tactical accessories without interfering with iron sights.

Crafted from high-strength D16T aluminum alloy with a durable black or desert anodized coating, the B-33 ensures exceptional stability and zero retention even after repeated openings and closings.

Key Features:

• Replaces standard AK receiver cover
• 170 mm integrated Picatinny rail (17 slots)
• Compatible with B-10M and B-30 handguards
• Mounted via 5 screws: 4 on the handguard, 1 to the receiver
• Maintains zero during repeated use
• Does not block iron sight line
• Highly durable all-milled D16T aluminum body

Specifications:

• Material: D16T aluminum alloy
• Weight: 215 ± 10 g
• Dimensions: 300 × 50 × 37 mm ± 2 mm
• Operating temperature range: -50°C to +50°C
• Warranty: 60 months

In the kit:

• B-33 receiver cover rail – 1 pc
• Front and rear recoil spring guides – 1 pc
• M5x7 screws – 4 pcs
• User manual – 1 pc

Installation Instructions:

1. Remove the standard receiver cover and recoil spring.
2. Install a compatible mounting bracket (B-10M or B-30).
3. Insert the B-33 into the grooves of the installed bracket.
4. Secure with four M5x7 screws into the handguard.
5. Install the included steel recoil spring guide and secure it. Thread locker may be used.
6. Insert the recoil spring and lock the B-33 in place.

Note: Not recommended for use with a recoil damper. Please consult the user manual for illustrated instructions.

Original Zenitco product. Distributed globally by Bazalet.