Product DescriptionThe Spikes Tactical STSB920 Upper/Lower Receiver Set is built for AR-15 pattern 9mm configurations that use Glock magazines. This receiver set features pockets machined throughout the lower to help reduce weight while maintaining strength where it matters most. Its 3D chamfered edges and surfaces help minimize snagging, while the enhanced pivot and steel takedown pins create a distinctive integrated look. The large flared magazine well supports faster reloads, and the streamlined upper profile omits the dust cover door, forward assist, and shell deflector to keep the setup slim and purpose-built. This set also includes a last round bolt hold open, shell ejector, KNS Mod ST pin kit, buffer retaining pin, buffer retaining pin spring, and Spike&';s Tactical 90 degree ambidextrous safety.Product Highlights Designed for AR-15 style 9mm builds that accept Glock magazines 7075-T6 aluminum construction with weight-reducing machined pockets for strength and reduced mass Black hardcoat anodized finish for durability and corrosion resistance Large flared magazine well and 3D chamfered surfaces help improve handling and reduce snag points Includes last round bolt hold open, shell ejector, KNS Mod ST pin kit, and 90 degree ambidextrous safety Specs Product Type: Upper/Lower Receiver Set Platform: AR-15 / AR-Style Caliber: 9mm Luger Magazine Compatibility: Glock magazines Material: 7075-T6 Aluminum Finish: Black Hardcoat Anodized Safety: Ambidextrous, 90 degree Weight: 21.60 oz Included Components: Last round bolt hold open, shell ejector, KNS Mod ST pin kit, buffer retaining pin, buffer retaining pin spring, Spike&';s Tactical 90 degree ambidextrous safety Not Included: Pistol grip, grip screw, grip screw washer, buffer tube, latch plate, castle nut, buffer, buffer spring, hammer, trigger, disconnect, hammer spring, trigger spring, disconnect spring UPC: 815648029692 MPN: STSB920 Brand Name: Spikes Tactical Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.