The Combat Fixed Rear sight is compatible with your AR15 M4 M16 uses Standard A2 rear sight. It is constructed of billet 6061T6 aluminum is MilSpec height and has a black hardcoat anodized finish. 0.5 MOA Windage Adjustment for Rifle length systems. 0.65 MOA Windage Adjustment for Carbine length systems. Torque clamp to 35 inpounds. Made in the U.S.A.
STOCK NOTICE: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.