Product DescriptionThe ProMag PM123A Upper & Lower Receiver Magazine Well Vise Block Set is a durable three-piece kit designed for AR-15/M16 platforms. Constructed from impact-resistant, glass-filled nylon, these blocks securely clamp upper and lower receiver components to prevent damage or movement during repair, assembly, and cleaning. Purpose-built for the workbench, this U.S.-made set provides a stable, non-marring hold for confident gunsmithing and maintenance.Product Highlights Three-piece vise block set for AR-15/M16 upper and lower receivers Impact-resistant glass-filled nylon polymer construction with a non-marring hold Stabilizes receivers to prevent movement and potential damage during service Ideal for assembly, repair, and routine cleaning tasks Made in the USA with a tough black finish Specs Brand: ProMag MPN: PM123A UPC: 708279010156 Compatibility: AR-15/M16 platforms; not compatible with .308 AR receivers Material: Impact-resistant glass-filled nylon polymer Color/Finish: Black Quantity: 3-piece set Country of Manufacture: USA 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.