Self contained HPA blaster. Running off a portable compressor that will eventually be mounted on the stock so no air tank needed. Not as slick and quick as an air tank as
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EMG / SAI Licensed AR-15 GRY HPA Training Rifle w/ JailBrake Muzzle (Configuration: SBR / Grey / PolarStar G&P R3), Airsoft Guns, HPA / Electro-Pneumatic - Evike.com Airsoft Superstore