Up for sale is a brand new, unfired "Tactical Muscle Break" from Benchmark Barrels. It is threaded 5/8-24 and is bored for 6mm. I bought this for my 243 and never mounted it as I shot suppressed. This was sent off and was nitrided. It is a 3 port model. It also has the screw to tighten down the break instead of having it timed. Price is $145 shipped CONUS. Payment my USPS Money order, personal check, or Paypal gift. Break will be shipped via USPS Priority. This will be sold to first "I'll take it", or PM time stamp. Thanks.