Industry standard 8-32 male thread (5-40) for .17 Cal. .204 Cal.) ? 5/16 male thread (12, 20, 28 and 410 Gauge) ? Close tolerance specifications for perfect bore fit ? Will not harm or scratch steel ? Durable and reusable
Tetra
Industry standard 8-32 male thread (5-40) for .17 Cal. .204 Cal.) ? 5/16 male thread (12, 20, 28 and 410 Gauge) ? Close tolerance specifications for perfect bore fit ? Will not harm or scratch steel ? Durable and reusable