A build-in pneumatic reducing valve for a gas-operated gun includes a valve body, a cartridge connector and a valve disk. The rear wall includes an exit that communicates the grass bag with a cut grass carrying passage formed in the cutter housing, and a plurality of internal pressure control holes formed proximately to the exit. A flexible connector electrically couples the first circuit board to the second circuit board, such that the memory chip is electrically connected to the array of electrical contact points. A precursor material may be deposited on a substrate to form a precursor layer.