I'm not positive on this but .....a MQ-1 is apprx. 37" ata .........so if your brace height is on......then your ata should be close ! Example: My LX was spec'd at 35" apprx. .............but actually was 35 3/4 " exactly when my brace height was the correct 6 5/8" !! Mathews said 35 3/4 " was correct !