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ZCI Airsoft M4 5.5 Short CNC Aluminum Outer Barrel [M-02a] - $18.00 : BRILL ARMORY, Quality Airsoft parts for the discerning consumer.
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Airsoft M4A1 4 Segments Outer Barrel for M4 M16 Series AEG(18.125") GBBR(17.25") Black : Amazon.co.uk: Sports & Outdoors
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The DRACOS Barrel for Airsoft M4 AEGs - EMG Falkor Defense DRACOS Straightjacket AEG Outer Barrels - YouTube
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