It was a little bit on the expensive side, compared to some of my other P60 lights; but I really wanted to have a Surefire host, and this is the closest I've come to having a Surefire light. The overall expense wasn't a one-shot thing, since I already had the Sportac drop-in, installed in a Solarforce L2P host; and I also pulled the A001 head and tail cap off of an L2N light, that I had already purchased a few years back. So this is, essentially, my Frankenstein Surefire light. If you have a special attachment to your 6P light, that has given you many years of service, in harsh environments, and you would like to keep it running, but as a more updated version of itself, then it would be worth the investment. Surefire lights are known for their bullet proof dependability, which is why I would recommend using a high quality drop-in, to make it a more updated, more powerful light, and that's designed to handle the recoil, during use a a firearm-mounted light.