Joker-4 kit type A
"Joker-4" kit (kit type "A") is designed for rifles based on AR-15. Consists of a handguard and additional accessories. Length of handguard - 408 mm (16,06").
Has Picatinny rail on top and Basis rails on three sides. Basis rails allow installation of additional accessories directly on handguard, in particular: B-2 (45 mm.), B-2U (75 mm.), B-2L (34 mm.), B-2M (15 mm) side Picatinny rails; A-1L and A-2L slingmounts; RL-1 hand stoppers; RK-0L, RK-1L, RK-2L, RK-4L, RK-6L grips; NPN-2 Basis rail covers; FP-3 wire holders; tactical switches from "D" line.
In the kit:
| B-74 rail (upper) | 1 pc. |
| B-84 rail (lower) | 1 pc. |
| BN-1 titanium barrel nut | 1 pc. |
| Screw M5х7 | 8 pcs. |
| A-2L slingmount | 1 pc. |
| RL-1 hand stopper | 1 pc. |
| B-2L rail | 1 pc. |
| RGB-2 gas block 0,750" (with a pin) | 1 pc. |
| Device for RGB-2 positioning | 1 pc. |
| «Joker» key | 1 pc. |
| NPN-2 Basis rail cover | 6 pcs. |
| Cylinder (packaging) | 1 pc. |
| Manual | 1 pc. |
Overall dimensions:
B-74 rail: (368х39х38) ± 5 mm.;
B-84 rail: (408х41х51) ± 5 mm.;
BN-1 titanium barrel nut: (53х35) ± 5mm.;
RGB-2 gas block 0,750": (40х32х22) ± 5 mm.
Weight:
B-74 rail: 143 ± 3 g.;
B-84 rail: 187 ± 3 g.;
BN-1 titanium barrel nut: 62 ± 3 g.;
RGB-2 gas block 0,750": 30 ± 3 g.
To install «Joker» kit, you need to do the following:
- Deinstall your regular muzzle device, handguard, gas block, barrel nut.
- Unscrew BN-1 barrel nut, divide it into mounting nut and fixation nut. Tighten the mounting nut on the rifle.
- Install B-84 lower rail.
- Install the fixation nut. Tighten it by «Joker» key.
- Install RGB-2 adjustable gas block. For that do the following:
- Install a gas tube on RGB-2 (compatible only with straight gas tubes);
- Install RGB-2 on the barrel;
- Position RGB-2 on the barrel so, that the opening for gas outlet is combined with the gas inlet opening on RGB-2. For that slide the device for RGB-2 positioning along the B-84 rail so that RGB-2 enters the device. After that tighten two screws on RGB-2.
- Take off the device for RGB-2 positioning from the barrell. - Install (slide) B-74 upper rail on the lower rail.
- Tighten eight screws to fix B-74 rail on B-84 rail.
- Install A-2L slingmount, RL-1 hand stopper, B-2U rail if needed.
- Install NPN-2 Basis rail covers if needed.
Maintenance of rifles based on AR-15 becomes more comfortable with “Key Rod №1” (not in the kit, sold separately).
Warranty period of storage and operation of the product: 60 months.