I finally got a chance to do this update on the Wolf T91 AR upper.

I took a lot of notes from the comments, got in touch with Steve at Wolf Performance Arms and learned a few things about how Wolf Performance Arms manufacturers the parts for the upper.

Please pardon my Faux Pas when I said "hand grips" when I meant hand GUARDS.

Per info from Atlantic Firearms:
Wolf A1 AR 15 Upper T91 Gas Piston
Short Stroke Piston System
Hammer Forged Barrel (5.56 NATO), Nitride Treated
One Piece Bolt Carrier
17 Twist rate
Flash Suppressor
Proprietary RAPID CLEAN Onepiece Piston System
Authentic T91 Hand Guard
Authentic T91 Charging Handle
Works with standard height rear sights
NO REAR SIGHT INCLUDED
Please note: Muzzle brake style may vary