PROW SYSTEM MCX ALUMINUM ALLOY BOLT WITH NOZZLE & NPAS

A direct upgrade bolt carrier for PROW MCX series GBB rifles, machined from aluminum alloy for a lighter, more durable cycling assembly than stock. The adjustable NPAS (Negative Pressure Air System) comes pre-installed, so you get FPS-tunable performance right out of the box — no separate NPAS purchase or install required. Features: Aluminum alloy bolt and nozzle assembly for durable, consistent cycling Adjustable NPAS pre-installed — tune FPS without buying or fitting a separate kit Direct fit for PROW MCX series GBB rifles Who it's for: PROW MCX GBB owners who want NPAS adjustability without sourcing and installing a separate kit, or who are replacing a worn stock bolt/nozzle. Compatible with: PROW MCX series GBB rifles. Specifications: Material: aluminum alloy Compatibility: PROW MCX series GBB NPAS: adjustable, pre-installed