Wanted to add one to my collection, figured I go big or go home, and picked up a 416 upper, I had a bit of buyers remorse and was planning on selling it to fund a SCAR 16 but have changed my mind after I took it to the range a few days ago. It's still in pistol form waiting on stamp. I was really impressed with the accuracy and smoothness. shooting it side by side next to my mk18 upper it had noticeably less felt recoil and muzzle rise and obviously runs a lot cleaner. I took the T1 off of my mk18 upper and with the same ammo was grouping pretty much exactly the same. The true benefit will be when my stamp comes back on my m4-2000.
edit: receiver extension has been taped up since photo.