PCC upper receivers and complete upper assemblies integrate barrel, handguard, and bolt carrier group into a ready-to-build or drop-in upper for competition carbines. Complete uppers cut build time and eliminate fit issues between components; stripped uppers give experienced builders full control over barrel length, handguard selection, and BCG spec. Glock-pattern and Colt-pattern feed variants available for USPSA PCC and 3-Gun applications. Fast same-day shipping on most orders at Shooters Connection.