A little while ago I purchased a new Barska 4X28 IR Electro scope for my SR556. I've only be able to get out to the range with it three times now, so the thing is basically brand new. It never would hold a zero, but this last week I made it out to English Pit for some range time and the entire front lens came loose inside the scope housing. Right now the scope is a totally useless piece of scrap. I got in touch (twice now) with Barska customer service through their web site. (They promise 24 hour response time). So far, I've heard nothing back at all. All I wanted to know was if this problem was fixable. No answer. I know that Barska isn't the best optics company available, but I did expect better than this. Anyway, I've learned my lesson. Spend a little more and go with companies you can rely on. Before the Barska lawyers get all excited, I am only relating my personal experiences with their products and customer service. Other Barska customers may have different results.