Most standard hop-up chambers don't satisfy the players with their characteristics. They are too fragile, poorly feeding and spinning the bbs. Therefore, players choose to use custom parts.   

The hop-up chamber has a convenient rotary adjustment, as well as a collect clip and an aluminium clip for dixing the stem. The kit includes a nozzle with two sealing rubber bands, which provides the best compression. Made from duraluminum with high-precision CNC machine.   

The "Kovrov" camera compatible with PKM, PKP "Pecheneg" and M60/mk43 by A&K.