Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great sight for my AR-15!!!

I really liked the fiber optic sights, but they were ridiculously expensive. This guy at a local gun shop recommended this product because of its durability, accuracy, and price. This sight went easily on my AR-15 and I had it adjusted/sighted in 15 minutes. I am shooting a 1" grouping at 50 yards with a good breeze, and I am so pleased. I don't think you can get a better sight for the price. I was even more pleased when I learned that EOTech supplies a large percentage of these sights to the US Armed Forces.