Welcome from AZ !
Besides what Wash said I noticed you have a ar15 LPK listed you need a lr308 kit or a lr308 bolt catch and pivot pin & takedown pin for lr308 to go with the AR15 LPK. Also the buffer needs to be a lr308 carbine buffer which is shorter than the dpms carbine buffer used in the ar15.
Used it tonight at work and its great ! Wore it spidy style between the straps of my wristband, prefect fit. My three supers all want one and the boss said he would buy them. They really illuminate the inside of a truck.
I got a black day pack that holds a ton of stuff. I take it shooting every time and it works great. Also I have a full size Kelty internal fame climbing pack that is "huge" ,has slots on each side for skis(gun fits).