Home / Products / Dirty Bird Industries / NBS Upper Parts (Forward Assist & Dust Cover) Kit W/ Stainless Steel Forward Assist and Hinge Pin
NBS Upper Parts (Forward Assist & Dust Cover) Kit W/ Stainless Steel Forward Assist and Hinge Pin
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Sep 2, 2026
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The NBS NBS Upper Parts (Forward Assist & Dust Cover) Kit W/ Stainless Steel Forward Assist and Hinge Pin comes with both the Dust Cover / Port Door Assembly and Forward Assist Assembly parts for AR-15 Platform Rifles. This kit is upgraded to include a CNC Machined Stainless Steel Forward Assist Cap and Stainless Steel Hinge Pin enhanced aesthetics, corrosion resistance and durability.Precision Machined in the USASteel ComponentsMil-Spec TolerancesNBS Limited Lifetime Warranty