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Description

-- with Adjustable NPAS (Negative Pressure Air System)
-- To avoid pee BB and reduce jam BB & increase ROF
-- Adjusting FPS Power Output
-- Light weight 7075 Aluminum Nozzle
-- Suit for Western Arms M4 / M16 Series Airsoft GBB Rifle

Replace the original bolt carrier set with Complete N.P.A.S. Set

Equipped Tool Adjust NPAS Set makes your GBB Rifle Power Output Adjustable
Come With Light Aluminum nozzle
Light weight 7075 Aluminum made

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