Burris FastFire 3 1x 21mm Red Dot Sight, Black - 300234D

The Burris FastFire 3 is a compact 1x red dot sight with a 21x15mm clear objective lens and a 3 MOA dot reticle. It features 3 manual brightness settings plus automatic brightness adjustment, unlimited eye relief, and is fully waterproof and shockproof. The sight mounts via Picatinny rail with 86 MOA windage and 115 MOA elevation adjustments, and uses a top-mounted CR1632 battery for easy access.