The Hawke Airmax Air Gun Scope 3-9x 40mm is a wide angle optical system ideal for airguns. The 16 layer fully multi-coated optics provide exceptional clarity. Built on a 1 inch mono-tube chassis for superior strength and featuring a glass etched reticle to withstand high recoil. Additional features include an adjustable objective for parallax correction, a fast focus eyepiece, low profile finger adjustable turrets, and threaded objective and ocular bells. The Airmax is nitrogen purged for water, fog and shock proof performance and is covered by Hawke's Lifetime Warranty.