The Barska 4x32 AR-15/M-16 Sight by Barska is the perfect sight for instant and accurate targeting. Features long eye relief for quick target acquisition. The scope's mil-dot reticle and windage and elevation adjustments helps you stay on target. 100% waterproof, fogproof, shockproof and can withstand the recoil of advanced compact firearms. Includes Picatinny/Weaver base and M16/AR15 adapter mount. Backed by a manufacturer's one-year limited warranty.