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Mil-Spec dimensions and fit all standard AR15 size bolts. Gas rings are considered a "wear" item and will need replacement on occasion, replace your worn out gas rings and increase reliability. Leaking gas can cause serious performance issues. Keep a few
Mil-Spec dimensions and fit all standard AR15 size bolts. Gas rings are considered a "wear" item and will need replacement on occasion, replace your worn out gas rings and increase reliability. Leaking gas can cause serious performance issues. Keep a few on hand to make sure your AR is running reliably! Three are required for each bolt.
