If you run a suppressed SBR like I do then you probably get gas in the face, even if you have some cool charging handle like the PRI Gas Buster. I have been using this Gemtech SBC (Suppressed Bolt Carrier) since it came out and I am very impressed with it. I set and forget the system on suppressed and can shoot about 1500 rounds before I get even the smallest hint of gas in my face. Highly recommended and a review to come soon on it.
Also in the photo:
Rainier Arms Ultramatch Billet MOD 3 Lower | Battle Arms Dev. Enhanced Pins | Noveske AR15 Safety Selector | ELF LE/MIL Service Trigger bought from MTG | Raptor Charging Handle from Rainier Arms | Cross Machine Tool AR15 Upper