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B-81 rail "Joker-1 "

  • Description
  • HOW TO INSTALL?
  • Compatibility
Bracket B-81 "Joker-1" (hereinafter referred to as B-81) is installed in place of the lower standard handguard of carbines based on AR-15 and has a guide Basis for mounting brackets B-2, B-2U, allowing you to mount additional equipment on weapons .

B-81 is a one-piece milled product made of D16T alloy with a black coating.

Operational Benefits:

  • Strength
  • Improves barrel cooling
  • Creates the ability to attach additional equipment
  • Minimum weight and size characteristics

Weight: 119 + 3g

Overall dimensions: (228x41x51) + 5mm (length 22.8 cm (8.98 "))

Operating range of ambient temperatures: from -50C to + 50C

Warranty period of storage and operation of the product: 60 months.

To install on a weapon you need:
  1. To dismantle the muzzle device, staff forend, gas block, mounting nut.
  2. Tighten the fastening nut manufactured by Zenit LLC by removing the pre-locking nut from it.
  3. Install the lower handguard B-81
  4. To put on a fixing nut.
  5. Put on the adjustable gas block.
  6. Through the holes available on the lower part of the B-81 bottom bracket (having previously displaced it so that the holes on the bracket coincide with the mounting screws on the gas block) or tilting the bottom bracket so as to gain access to the fixing screws, tighten the screws on the gas block thereby fixing the adjustable gas block.
  7. Slide the lower bracket firmly to the upper receiver so that the Picatinny rails form a single line.
  8. Using the key included in the kit, twist the fixing nut, thereby tightly locking the lower bracket on the carabiner.
  9. Place the top bracket on the bottom and slide it so that it sits in the grooves.
  10. Using four screws, we fix the upper handguard  B-71 on the lower handguard B-81.
  11. Secure additional equipment in any place convenient for the shooter.
No video installation instructions...
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