Our complete High Performance AR Upper Receiver Units use the same top tier components, skilled gunsmith assembly and final finishing as our prized custom AR rifles that we have expertly built since 1999. The Wilson Combat machined, hand polished, match grade stainless barrel is the core of these accurate and reliable upper units that will turn your lower into a custom AR rifle well equipped for hunting, duty or tactical competition. Other Wilson Combat components like our versatile and lightweight TRIM rail, Accu-Tac flash hider and NP3 bolt carrier assembly with ensure that your upper exceeds your cosmetic and performance expectations. Each Wilson Combat High Performance custom upper is test fired and finished in our Armor-Tuff coating and is certified to drop on and function with any mil-spec, AR lower unit.