The Osprey Magnetic Ring Mounts are perfect if you want to quickly attach and detach your accessories to any rifle. It comes with sturdy magnetic magnets attached to the ring mounts. These magnetic mounts are available in 2 different sizes: 1 in & 30mm. The 1 inch mount will fit with osprey 1000 and 600 lumen hand-held flashlights They are backed by Osprey’s industry leading no-nonsense lifetime warranty.