Supposedly there is gonna be a threaded barrel version available soon. Haven't noticed any flash with mine though.
Springfield Armory Bi-Tone XD(M) 9mm
Rock River Arms Tactical CAR A4 5.56 NATO
Smith & Wesson M&P15OR 5.56 NATO
Smith & Wesson M&P15-22 .22LR
Mossberg 12 gauge 500A Tactical
Interstate 12 gauge side-by-side "Coach Gun"
Taurus Model M44C Stainless .44 Mag snubby
Taurus Model 65 Stainless .357 Mag snubby
Ruger SP101 Stainless .357 Mag snubby
Beretta 92FS Stainless 9mm
Kel-Tec Hard-Chrome P3AT .380 ACP
Marlin 336C .30-30
Marlin 60 SS .22 LR
Ruger 10/22 Compact
Ruger 22/45 .22 LR