Quick view Compare Choose Options TuF Oil Filter Thread Adapters For AR, AK... 8 Size Barrel Thread 1/2"-28, 1/2"-36, M14x1LH, M16x1L, 5/8"-24, 9/16"-24, 9/16"-24L, 11/16"-24, to External thread 13/16"-16 as same as Oil Filter for Solvent Trap & Tufforce 2-Piece Muzzle Brakes MSRP: $15.00 Was: Now: $9.99 - $14.93