Technical Discussions & Troubleshooting
After installing a new ACOG TA33R8 with the Tenebraex screw-on sunshade, the 556 SWAT groups were unpredictable and often more than 1” at 100 yards. Tried everything until one day, I noticed on the Top Rail, a screw below the ACOG mount that was protruding ever so slightly leaning to the right...