RE: lumenok x lighted nock
I use the X-nock lumenocs on with my Full Metal Jackets and they have performed well. It was a real pain in the ass to the nock inserted the first time, like I thought I was going to definetely break it, but once I got it in and loosened up a little, it has worked well. I have nocked and un-nocked it lots of times and now it is pretty loose and works even better.