The Bushnell AR Optics Transition 3x Magnifier offers instant red dot magnification when you want it and flips out of the way when you don't. It pairs perfectly with the Bushnell TRS-25 Red Dot but is compatible with any red dot optic. The included ambidextrous flip mount quickly attaches to your accessory rail, and fully multi-coated optics deliver crisp, bright images. Waterproof Construction - O-ring sealed optics stay dry inside, even when totally immersed in water. Shockproof construction - Built to withstand bumps, bangs, drops and the rough-and-tumble environment of the field. Nitrogen Purged Fog-Proofing - Nitrogen inside the scope ensures interior optical surfaces won't fog due to humidity or rapid temperature change. California Proposition 65 WARNING:This product can expose you to chemicals including lead, that are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov