Trinity Remington 870 Saddle Mount Holographic 4 Reticle Red & Green Sight, single rail mount. 3 Days Shipping Anywhere in USA-We Ship Monday Thru Saturday Our kit includes Sight and Rail Mount for Remington 870 Shotgun T6 6061 Aircraft Aluminum Body 4 Reticle Adjustable Tactical Holo Sight With Red/ Green Reticles Dual brightness control The intensity of the red and green illumination can be adjusted with a turn of a knob.