I was having a problem downloading the app to my iPhone 6s but a phone call today to tech support fixed it and i am now up-to-date with all down loads, A big thank you to tech support.
6.5 Grendel i put together using Odin Works 20" barrel, Billet upper receiver and 02 lite forend, 80% lower, Larue MBT Trigger, BCM lower parts kit and stock kit and LUTH Stock and a MARCH 8x80x56mm scope
PETZL, I have used them for the past 20 years running guided fishing trips, Never let us down. Get the TACTIKKA + runs on 3 AAA's or a rechargeable. Great in the boat and in camp. Gives plenty of light to see were you are walking.
On my Grendel build I used the Odin Works low profile adjustable gas block and I am very happy with it. It is easy to adjust and has worked well. As for which buffers and springs I use the BCM Milspec Carbine Stock Hardware MOUNTING KIT with the standard carbine buffer with no problems.
I also picked up the bullseye long range camera system and have been very happy with it, It works well and it is easy to see your shots with it, We have used it out to 600yds with no problems.