BAD Thumper Muzzle Brake, Black Finish, 1/2X28 Threads BAD-THUMPER-223-BN Available to order on-line. Ships in 5-14 days Price: $70.00 Description Details Reviews Shipping info Battle Arms Thumper muzzle brake. 17-4 Stainless steel 1/2X28 threads Black nitride UPC: 810033781872Manufacturer: Battle Arms DevelopmentModel: BAD-THUMPER-223-BNCaliber: 223 RemCategory: PartsOtherMisc AR-15 PartsStock: Ships in 5-14 business days.Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.