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Surefire M16 Weaver Colt Rifle Mount for Classic Universal Weapon Flashlights fits barrel diameters 0.5 to 0.9. inches. Surefire Classic Universal Weaponlight Weaver Picatinny Mount M-16 also fits under front sight casting of M6/AR15 variants.
• Surefire Colt Rifles Weaver Mount For Classic Universal Weaponlight Systems M-16