.625 clamp on ar gas block

[s2k1]

Looking for a .625 clamp on gas block. My first choice, vltor in black, is no where in stock. Considering daniel defense, but came accross BTE (Battle Tested Equipment). Anyone have one of these? BTE also makes an adjustable one. I was also considering the Syrac, but the .625 is only with set screws, not clamp on. Suggestions?