Ace1 Arms Tactical Barrel Upgrade Kit For WE M&P9 Metal Sound Sensor built-in drum magazine

Sound Sensor built-in drum magazine help winding bullet into barrel while shooting

- Cocking Handle can be locked & released (Able to move to Right / Left side)

- Magazine Capacity: 21 Rounds

6-inch barrel does not require the bulbous muzzle chamber of the AKS-74U but does use a specially designed muzzle brake

APS AUG Carbine LE Model AEG with Adjustable Scope

Ace1 Arms Tactical Barrel Upgrade Kit For WE M&P9 Metal Sound Sensor built-in drum magazineFinish: Bead blasted & Hard Coat Andoizing Mount: +14mm Clockwise Feature: Special Design Inner Barrel for Ace1 Arms OSP Style Range Up Mock Suppresser Inside O ring Design for stabilize inner barrel Kits Included: Thread Tactical Outer Barrel Accurate 6. 01mm Inner Barrel