The B-31 Upper Handguard rail is a milled product made of aluminum alloy D16T. Current version: V 2.0.

It is designed for use with B-30 and B-30U handguards, secured by eight screws. 

The B-31 forms a Picatinny rail over the barrel and gas tube of the AK, 185±5 mm long, which does not obstruct the iron sight line. 

It can also be used as part of the "Sport-1" kit as an alternative to the B-31L upper handguard.

Specifications:

Material: D16T aluminum alloy

Weight: 116 ± 5 g

Overall Dimensions: (200 x 50 x 37) ± 5 mm

Operating Temperature Range: -50 to +50 °С

In the Kit:

Installation Instructions:

1. Perform an incomplete disassembly of your platform.
2. Remove the standard upper handguard by holding the gas tube with one hand and rotating the standard upper handguard with the other.
3. Install the B-31 Upper Handguard on the lower handguard, then secure it with screws using a screwdriver.

The manufacturer reserves the right to make changes to the product design or configuration without prior notice, provided these changes do not negatively affect the technical characteristics or consumer properties of the product and are aimed at improving its design or production technology.