Tired of sending your m110 upper off to a shop to have a rail swapped? I am offering SR25 Urx 2 and 3.1 barrel nut wrenches. If you know they have been unavailable for some time. I have added wrench flats so it’s easier to torque compared to the original version. They come with a money back guarantee if you don’t like the tool. They are ready to ship today.
