The San Tan Tactical Pillar LT Upper Receiver is engineered for durability and precision. Constructed from a single billet of aerospace-grade 7075-T651 aluminum, this upper receiver features truss pockets that enhance structural rigidity. It is machined to Mil-Spec standards, equipped with M4 feed ramps, and designed to interface seamlessly with all AR15, M16, and M4 weapon systems. The flat top design allows for easy optic relocation, and it accepts all known handguards without the need for modifications. Finished in Mil-Spec Type III Class II hard coat anodized black, it also supports compatibility with battery assist levers available on the market today. Backed by San Tan Tactical's unmatched lifetime warranty, this upper receiver is proudly made in the USA and is a reliable choice for any tactical or competitive shooting application.