Great product, good deal - Burris AR-536 5X - 36mm Prism Sight & Free FastFire 3 Red Dot Sight

I picked up this combo for $399.99 and couldn't be happier with it. I proceeded to put the AR-536 onto my 16" carbine, and the first thing I noticed was how clear the glass was. The eye relief bothered me at first, but it isn't too bad after some drilling. It was easy to sight in @ 100yds and took about 10 rounds. The etched reticle is a nice touch as well. I can't vouch for how tough the housing is, as I haven't bashed it into anything yet, however it does seem very well made.

The FastFire3 ended up on my KSG 12ga bullpup shotgun. This too was very easy to dial in. I had my worries at first; I've tried other optics on this particular weapon and it has killed them very quickly from the shock. I believe this to be because the optics mount on the barrel, in front of all the action. ~150 rounds later and it still holds the zero with no problems! Seems like a high quality product that can take reasonable beatings.

TLDR; Great combo at a great price point.