Secret Weapon Miniatures are now stocking Brass Razor Wire.
From their announcement:
18.3 feet of photo etched brass short tine razor wire – that’s 5.58 meters for those of you outside of the colonies – because barbed wire is for sissies.
This is a realistic (and sharp) razor wire that was designed for 1:48 to 1:30 scale models but doesn’t look out of place on 1:16 models.
Each of the 55 rows is 4″ long and is provided in a continuous loop to allow you to set the scale length of your choice.