Joker-4 kit type A by Zenitco

Joker-4 kit type A by Zenitco is a professional handguard system designed for AR-15 platform rifles. With an extended length of 408 mm (16.06"), it provides a full-length Picatinny top rail and Basis rails on three sides for direct mounting of a wide range of tactical accessories without adapters.

Included in the Kit:

• B-74 rail (upper) – 1 pc
• B-84 rail (lower) – 1 pc
• BN-1 titanium barrel nut – 1 pc
• RGB-2 adjustable gas block 0.750" with pin – 1 pc
• Device for RGB-2 positioning – 1 pc
• Joker key – 1 pc
• Screws M5x7 – 8 pcs
• A-2L slingmount – 1 pc
• RL-1 hand stopper – 1 pc
• B-2L Picatinny rail – 1 pc
• NPN-2 Basis rail covers – 6 pcs
• Protective cylinder packaging – 1 pc
• Operation manual – 1 pc

Compatibility: Supports installation of B-2, B-2U, B-2L, B-2M side Picatinny rails, A-1L/A-2L slingmounts, RL-1 stoppers, RK series grips, FP-3 wire holders, NPN-2 covers, and D-line switches.

Dimensions:

• B-74 rail: 368 × 39 × 38 ± 5 mm
• B-84 rail: 408 × 41 × 51 ± 5 mm
• BN-1 barrel nut: 53 × 35 ± 5 mm
• RGB-2 gas block: 40 × 32 × 22 ± 5 mm

Weight:

• B-74 rail: 143 ± 3 g
• B-84 rail: 187 ± 3 g
• BN-1 barrel nut: 62 ± 3 g
• RGB-2 gas block: 30 ± 3 g

Operating temperature range: from -50 °C to +50 °C

Warranty: 60 months

Installation Instructions:

1. Remove the standard muzzle device, handguard, gas block, and barrel nut.
2. Separate BN-1 into mounting and fixation nuts. Install the mounting nut onto the rifle.
3. Install B-84 lower rail and secure it with the fixation nut using the Joker key.
4. Install RGB-2 gas block:
   • Attach a straight gas tube to RGB-2
   • Position RGB-2 so its inlet matches the barrel outlet using the included positioning device
   • Tighten RGB-2 screws and remove the positioning device
5. Slide B-74 upper rail onto B-84 and secure it with 8 M5x7 screws.
6. Install A-2L slingmount, RL-1 stopper, B-2L rail, and NPN-2 covers as needed.

Optional: Key Rod №1 (sold separately) simplifies AR-15 platform maintenance.

Manufactured by: Zenitco
Distributed by: Bazalet
Available for worldwide shipping.