sorry, I can't answer that... 3 gun is harder on the equipment, than just range use... I transport in a padded bag, and on a cart... the RRA has dropped out of racks a couple of times by accident... shot all six of the Ft Benning matches, and some of the positions were pretty hard on the fore end... my sling attachment is on it also... the RRA tube is 1/8"... my backup is a ARMS rail from the prize table at Ft Benning, and uses a regular barrel nut, and the rail is clamped to the barrel nut... this might be a better option for heavier duty use