I bought this BSA Reflex Red Dot sight from Sportsmans Guide on sale for $29.99 and tightened it down on my SR-556's sight rail.
I sighted it in at 25 yards today. I really like how easy it is to see the red dot, even in bright sunlight, with both eyes open. 10 shots of cheap Remington bulk 55 grain .223 and I'm very happy with the 25 yard results:
I sighted it in at 25 yards today. I really like how easy it is to see the red dot, even in bright sunlight, with both eyes open. 10 shots of cheap Remington bulk 55 grain .223 and I'm very happy with the 25 yard results: