Barska AC10832 Varmint 4-16x40 Rifle Scope 30/30 Reticle Adjustable Objective, BlackBARSKA 's 4 16x40mm AO Varmint Rifle Scope is the one you want when precision is a critical factor This BARSKA Varmint Riflescope gives you the advantage with long range and deadly accurate targeting The 40mm objective lens on this Barska Scope increases light transmission coupled with Fully Multi Coated optics, which allows this rifle scope to provide extreme clarity Engineered with an Adjustable Objective (AO) for parallax correction and easy grip