Product DescriptionWinchester #41 Small Rifle Primers (WMSRL) are NATO-spec primers designed for 5.56mm / 5.56x45mm NATO reloads where consistent ignition and reliable performance are critical. Manufactured to exacting specifications, these primers are rigorously tested for consistency and sensitivity across demanding conditions, helping deliver dependable shot-to-shot results for precision-oriented handloading. This package includes 1,000 small rifle primers.Product Highlights NATO-spec #41 small rifle primers engineered for 5.56mm / 5.56x45mm NATO reloading applications Built to tight tolerances for dependable ignition and consistent performance Rigorously tested for consistency and sensitivity across varied temperatures and conditions Carefully controlled primer mixture weights and anvil height specifications for uniformity Bulk 1,000-count pack for efficient high-volume reloading Specs Brand: Winchester Ammo Manufacturer Part Number: WMSRL UPC: 020892300491 Primer Type/Series: #41 Primer Size: Small Rifle Intended Cartridge: 5.56mm / 5.56x45mm NATO Quantity: 1,000 primers Country of Manufacture: USA Approx. Package Length: 2.10 in Boxes per Case: 5 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.