For sale is a used Troy Claymore muzzle brake. $40 shipped - or best offer. Threads are 5/8 x 24. This was used on my 300 Blackout and will not come with the crush washer. Paypal gift is preferred or you can pay the extra 3%.
Technical Specifications - 6.8/7.62 (5/8 x 24 TPI) 2.25" OAL. Heat-treated ordnance steel construction.