Another vote for both the alpex 4k and the zulus v2. I have both, if weight saving is important to you then I'd suggest the zulus v2 LRF night vision all in one compact unit and costs less that the alpex 4k. Once mounted to the rifle you'll have a kit that's ready to go day or night without the need to attach an IR torch. Got my zulus from blackwood recently, great shopping experience and very helpful with questions I asked.