Nikon SF M-308 Nikoplex (Duplex) 4-16x42 Sporting Rifle Scope Matte Black.p - Engineered for the .308 Winchester/7.62x51 NATO round with 168-grain hollow point boattail Match bullet.br - Ultra ClearCoat Optical System for up to 95% light transmission.br - Eye Box Technology-4 time zoom and up to 4" of constant eye relief.br - Enhanced mount ring spacing.br - Waterproof, fogproof, shockproof.br - Zero-Reset Turrets.br - One-piece main body tube.br - Locking side focus parallax adjustment.