If you need AR15 Upper Receivers to help you finish your AR build, the P-415 Edge Upper Receiver Assembly was designed to be unstoppable in all environments. Originally developed over 15 years ago, POF USA has been constantly testing, upgrading, and improving the design to perfect it. The P-415 features the E2 Extraction Technology for easy cycling during repeated fire. It also has complete ambidextrous fire controls to cater to both right- and left-hand dominant shooters, ensuring everyone can use it comfortably.image