[John Sabato]

Hi Rick,

I think relieving the areas around the rails is a prudent idea that is less likely to cause damage to the receiver with a properly adjusted receiver wrench... I also believe that the area of the recoil lug should be real snug... if your wrench allows movement in this area I would say it is not tight enough. That's why my concept of a Luger receiver wrench applies pressure to the top and bottom of the receiver and not the sides... Cutting a new wrench segment was a wise idea... I like your wrench concept of having replaceable surfaces to adapt to specific receivers... another way to take up the slack is to use a layer or two of aluminum flashing material that will crush as the wrench is tightened and provide a snug fit.

You might consider revising your wrench design to allow for insertion of aluminum flashing material as a cushion on all surfaces that feel the torque of barrel removal or insertion. The aluminum will crush but cannot harm the steel it is protecting...

I would request that if possible, that you post photos of your wrench design and perhaps even the removal process for others to see so that they can understand better what is involved in removing a barrel.

I hope this discussion has been helpful. If you have any other questions please don't hesitate to ask.