Got a Sightron SRS-2 on my Stevens 301 20 ga and really like it. Great deal for $199.99 from couple sites. Seems as well made as the Burris Fastfire III and has been selling for $250 and more for some time. What I like about it is the brightness has several setting with up and down buttons and easy to adjust, battery tray on the side easy to replace the battery if dead. Do not like the protector that comes with it, but am going to order the Dream Plastics one for it.