Specifications: Stainless steel 1/2 x 28 for .223 and 5/8 x 24 for .30 and above Weight 4 oz. for 1/2 x28 and 3.2 oz. for 5/8 x 24 Includes crush washer for proper indexing Made to fit a .920 bull barrel diameter Available in Natural, Burnt Bronze and Black Also available in Titanium
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