1/2"x28 or 5/8"x24 Thread 3PCS Design Krinkov Style Muzzle Brake For .223/5.56 or .308

1/2" x 28 Thread for .223/5.56
5/8" x 24 Thread for .308

Made of High Quality Carbon Steel, Heat Treated, black.
The Adapter Locked By 4 Set Screws And Its Thread Determine The Application Of This Item
3 Piece Krink design, Plus Adapter And Locking Ring
Measures 3.4"
Reduces blow back and back pressure
10mm Exit