I recently bought a Wilson 16" barrel upper chambered in AAC 300 Blackout. I plan to initially mount it on my Colt 6940 lower to see if I really like the cartridge. Since I'm currently here gunless in Korea, I won't be able to try it out until I get back to the States when I retire at the end of February. Any ideas from you guys on ammunition, handloading ACC 300 BO, and or sighting systems appropriate to a tactically-oriented carbine? Also any thoughts on a good lower to dedicate to the Wilson upper?