Ar Uppers

Building your ideal AR starts with the right upper receiver, and our selection of 331+ AR uppers gives you the control. We carry complete uppers from trusted manufacturers like Aero Precision, BCM, and PSA, in lengths from 10.5-inch pistol configurations to 20-inch rifle barrels, ready to mate with your lower. Whether you’re after a lightweight M-LOK handguard for a duty build or a stainless steel barrel for precision shooting in .223 Wylde, you’ll find the core component here. The right upper defines your rifle’s purpose, and we’ve got the variety to match yours. At Delaware Firearms, we know the details matter, so you’ll find options with different gas system lengths, bolt carrier groups included or separate, and a range of finishes. Browse our full selection below.