This guide details how to overcome the common short eye relief issue with 4x Trijicon ACOGs, particularly the TA31 model. Instruction from Mrgunsngear demonstrates a practical mounting solution: reversing the order of the optic and backup iron sights. By mounting the ACOG further back over the charging handle and placing the BUIS in front, shooters can achieve better eye relief and a more comfortable shooting posture, even with the trade-off of a slightly reduced BUIS sight radius.
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