Discover the Spike's Tactical billet upper Gen II receiver - a game changer that goes beyond mere cosmetic upgrades. Engineered with functional enhancements not found in other billet upper receivers, this model features additional pockets to reduce weight while maintaining exceptional strength. Crafted from 7075 billet aluminum and finished with a Type III Hard coat anodized coating for durability, this receiver is built to last. M4 feed ramps are expertly cut before the anodizing process, ensuring reliability for the long haul. We've thoughtfully flared the side walls to eliminate accidental bolt release issues and our unique machining allows you to utilize popular aftermarket bolt catch levers like the Magpul BAD lever - a feature often missing in other billet upper receivers. Elevate your AR experience with the Spike's Tactical billet upper Gen II receiver, where innovative design meets unparalleled performance.