I bought this sight for my G&G M14 a few months ago. It works great once you get it zeroed in. The 4 rectiles and multiple brightness settings give plenty of options for adjustment. The green dots really work well in low light conditions. I had some problems using it on the M14 because I could not get the sight to aim high enough at fist, but I eventually got it dialed in. The windage and elevation adjustments are very precise, but you need to carry an allen wrench with you if you want to adjust it in the field. It is also worth it to buy a protective shield for the glass because mine fractured when it was hit by a bb.
-Precise sight for midrange shooting
-Great adjustments and rectiles
-Cool low profile look
-Allen wrench need for adjustment.
-Hard to adjust elevation on long guns with low-profile scope mounts (like the M14)
-Glass can fracture even though NC Star says it's impact resistant.
Rating: [4 of 5 Stars!]