Bolt buffer prevents contact between the bolt and stop pin to eliminate battering. Acts like a shock absorber to provide smooth, quiet cycling without the metal-to-metal contact. Replaces bolt stop pin at rear of receiver. Precision made with high cut & tear resistance, superior load bearing properties, excellent abrasion and impact resistance, good low temperature flexibility and are oil & solvent resistant

SPECS: Polyurethane, blue tint. Can be used on .22LR - .22WMR & .17MH2 calibers only

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