Enhance your AR-15 performance with the Wilson Combat TR-BCA, a premium bolt carrier assembly renowned for its reliability and precision. Crafted from superior materials, this assembly is engineered for exceptional durability and functionality, making it ideal for both enthusiasts and professionals alike. Parkerized finish and internally chrome lined Bolt material is Carpenter 158 Mil-Spec parts ensure a long service life Machined ejector and extractor per mil specs Drop in fit for any quality 5.56 case head based AR rifle Choose the Wilson Combat TR-BCA for unmatched reliability and performance in your shooting endeavors.