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US Machinegun: *Buffer Tube Adapter for MPA 9mm (Newer Models), MASTERPIECE ARMS / VULCAN / VELOCITY ALL 9MM, MINI SERIES & 5.7x28mm SERIES - UPGRADES, ADPT-MPA9M
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Amazon.com: GOTICAL-End Cap with Detachable Push Button Sling Swivel for The Mossberg 500 Threaded Handles Durable & Material with Free Stock Wrench Included
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