Individual Selling Lightly used never abused. 5/8-24 Threads. For all 30 / 7.62 calibers, 300 Black Out, 308, 7.62x51, 7.62x39, 30-06, Any of them. This requires a $200 tax stamp, a Form 4, and a waiting period of 6-8 months. Call or Text (409) 782-8971. No E Mail