Sits only .4375" when folded Extremely low profile dual aperture design Locking detent with large surface area for maximum strength Same ball detent battle proven design of #MCTAR-ERS Lock detent button with stepped down turns, to provide a surface you can grab onto if your hands are muddy or wet. Micro style windage knob featuring the same MOA adjustments as the standard M-16: .65 MOA on M-4 type rifles / .49 MOA on A4 Type rifles Made in U.S.A. with MI Lifetime Warranty Weight 1.3oz