Lewis Machine & Tool 308 Ar Back Up Iron Sight Kit Black
.308 BUIS Kit includes a front and rear .308 BUIS Flip Up sight. Front Flip Up Sight: Positively locks and opens. Uses a press detent to open the clutch and allow easy closure. Clutch provides firm but flexible resistance to endure mild obstructions while staying upright and completely closes under high pressure without breaking. Rear Flip Up Sight: Designed for Rifle length rail and is marked for use up to 800 yards. Adjustment: Rear sight is 1/2 MOA Height Adjustment and 1/4 MOA Ambi Windage Adjustment. Aperture: Course sight is 0.125 / Fine sight is 0.0625. Features: Z Mark to designate Zero, Hand flip up and down, Attach to rail Mfg: Lewis Machine & Tool SPECS: Fits .308/7.62 Caliber Rifles., Weight: 0.278 Pounds / 0.126 Kilograms.