The Phase 5 Weapon Systems EPCSURPRISE Ejection Port Door for AR-15 in Black Parkerized Steel measures 3.10 inches and combines durable steel construction with a rugged parkerized finish for lasting wear in demanding shooting environments. This Phase 5 component is designed to replace the standard ejection port door, delivering a precise fit and a bold engraved detail that reads Surprise Asshole!! to add a distinctive, custom touch while maintaining reliable operation under dynamic rifle conditions. Engineered as a high-strength recoil-friendly part, the EPCSURPRISE integrates seamlessly with compatible AR-15 receivers, contributing to a streamlined profile and dependable cycling. The black parkerized steel finish not only enhances corrosion resistance but also provides a low-reflectivity appearance suitable for tactical or competition applications. Whether upgrading to improve aesthetics, personalize your build, or refresh a worn port door, this product leverages Phase 5s reputation for rugged, purpose-built rifle parts, offering a practical balance of form and function. Ideal for enthusiasts seeking a standout upgrade that blends durable materials with a definitive, unmistakable look.