GHM9 NPAS

NPAS design for the Lambda Defense GHM-9.

This replaces the stock rocket valve and allows you to adjust down the fps using just a hex key. Reports are that this also works on the Gen 1 glock / GHM9-G models, although I have not personally tested it.

Notes: When installing, ensure that the opening faces the gas inlet, and the notch runs along the vane on the inside of the nozzle