Works as intended - Thompson Center Dimensions Bridge Mount Assembly

It performs exactly as advertised, and will secure your sighted scope to the barrel/caliber that you want. Easy to install, except the front portion (which attaches to the barrel) is prone to cracking because it's made of plastic. Do not over-torque and make sure it is correctly aligned before tightening the screws. Also make sure the gun is secured in a vice or similar stand while working on it. Lastly, suggest you try and tighten with short turns only as you alternate screws. I bought two of them and one, indeed, ended up cracking on me. Could've been my fault because I tried to attach one without having the barrel completely secured in a gun vise. So much for trying to save a step!