Rail platform above gas tube B-30
The B-30 is an extended railed handguard designed for use with stamped receiver AK variants such as the 74, 74S, 74M, 103, 104, 105, AKM, AKMS. Has rails on three sides all along the lenght of the hand guard. Allows for the installation of upper handguard rails above the gas tube, such as B-31, B-31S, B-32 and the B-33 dust cover.