TR50 HDR50 TR50L M4 Carbine M177 Whisper Muzzle Brake (17mm muzzle threads)

This is the best thread-on muzzle brake for the Tactical Series barrel. It is 4.5" long and a perfect addition for a Sniper Rifle. 
Diameter: 1.25 inch
Length: 4.5 inch
This thread-on muzzle is compatible with any 17mm muzzle threaded barrel tip (comes with a fitting adapter). Aluminum alloy construction.