This barrel nut removal tool is made by Idaho 2A Tactical in Boise, Idaho. It is 3D printed. It is not a B&T OEM part. It fits GHM9 SD barrel nuts (port covers) with two wrench flats, 21mm across.
There are two port nut variations: 28mm and 21mm (21mm is the most common). Please double-check your port nut by measuring the distance between the wrench flats.
Available in black or orange.
