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This is the Bushmaster 6.8mm A3 Complete Upper Receiver Flat Top 1 x 11 Twist. This is a new 6.8mm SPC Caliber 16" M4 Profile Barrel with Detachable A3 Handle and 26 Round 6.8mm Magazine. Mount a "Bushmaster of a higher caliber" on your existing Lower! The .270 cal. 6.8mm SPC (Special Purpose Cartridge) was developed for the military, but is now available commercially. Velocity averages a bit over 2600 FPS (with Hornady 115 Gr. V-Max), and the heavier bullet weights deliver a terminal energy capable of bringing down larger game. Bushmaster complete 6.8mm SPC Barreled Upper Receiver Assemblies include one 26 Round Magazine.
*Copy of Photo ID required for purchase of any uppers.
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