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AAC MPW UPPER 9" 300BLK

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100884
847128006848
6-0406444
Ships from Warehouse 6
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  • DESCRIPTION
  • REVIEWS

AAC® MPW UPPER ASSEMBLY


•Multi-Purpose Weapon (MPW) upper is ready to drop onto an AR15, M16 or M4 lower   •Corrosion-resistant SCARmor™ chamber coating   •Heat-treated & properly staked carrier key w/Permatex® gasket-seal compound ensures no gas leakage   •Nickel-Boron coated carrier & cam pin   •Shot-peened & black phosphated Mil-Spec Carpenter 158® bolt   •“Full auto” bolt carrier group features an added base layer of high-phosphorous electroless nickel to ensure extreme corrosion protection   •Custom 383K psi steel extractor spring & 300 ksi S2 tool steel extractor pin   •Wide temperature range green O-ring (tested to -40°F)   •4150 CMV steel threaded barrel w/corrosion-resistant SCARmor™ bore & exterior coating   •1:7" twist 5R rifling   •AAC 51T B 

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