Lumizone of course, a real good addition to any XBow, on mine I have just kept the stock strings, really don't care for the FFL strings on my bow, I shoot 416 grain boltwith 125 Spitfires and 125 Magnus Snuffers. My particular setup has worked real good, it is the weapon of choice for hog hunting now, just due to its KE. I also added a sling of course,and camo cover for the scope this was just my personal preference only.