Bracket B-84 "Joker-4" - Zenitco

Bracket B-84 "Joker-4" (hereinafter referred to as B-84) is installed in place of the lower standard forend of carbines based on AR-15 and has a guide Basis for mounting brackets B-2, B-2U, which allows attaching additional equipment to weapons .

B-84 is a solid-milled product made of alloy D16T with a black coating.

Operational advantages:

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

Weight: 187 + 3g

Overall dimensions: (408x41x51) mm (length 40.8 cm (16.06 "))

Working range of ambient temperatures environment: from -50 ° С to + 50 ° С

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

To install on a weapon you need:

1. Dismantle the muzzle device, standard forend, gas block, fastening nut.
2. Tighten the fastening nut from the production of OOO Zenit, having removed the pre-fixing nut from it.
3. Install the B-84 lower bracket.
4. Put on the fixing nut.
5. Put on the adjustable gas block.
6. Through the holes on the lower part of the B-84 lower bracket (having previously displaced it so that the holes on the bracket coincide with the fastening screws on the gas block) or by tilting the bottom bracket so that you can access the fixing screws, tighten the screws on the gas block, thereby fixing the adjustable gas block.
7. Slide the bottom bracket firmly against the upper receiver so that the Picatinny rails form a single line .
8. Using the wrench included in the kit, tighten the fixing nut, thereby firmly fixing the lower bracket on the carabiner.
9. Place the upper bracket on the lower one and slide it so that it sits in grooves.
10. Using four screws we fix the upper bracket B-74 on the lower bracket B-84.
11. Fix the additional equipment in any convenient place for the shooter.