Joker-4 kit type A by Zenitco

Brand: Zenitco
Product Code: Zenitco-1143
Availability: In Stock
SKU: Zenitco-1143

  • $828.36$745.02


Available Options



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.

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Zenitco, Joker-4, AR-15, RGB-2, tactical kit, Basis rail, Bazalet