I love your armorers wrench for my AR-15s for removing and tightening castle nuts. However, today I ran into an issue where the pistol brace extension had a bump out to prevent the rubber pistol brace from sliding too far forward towards the castle nut. Since your castle nut wrench end is a circle, it would not allow me to slide the wrench over the bump out in the buffer tube to reach the castle nut. Most castle nut wrenches are horseshoe shaped and would have been able to slide right onto the castle nut with now issue.
Why did you guys go with a full circle shaped wrench for the castle nut instead of a horseshoe shaped one? I know it was designed with milspec buffer tubes in mind, but with so many different style pistol tubes made for braces, I am sure you run into this from time to time.
I still love your products, but had to barrow another wrench from a friend to get the old tube off.