The American Defense AD-T1- CASV Quick-Release Aimpoint Micro Sight Mount was designed to provide a lower 1/3rd ( SOCOM Height ) co-witness when used in conjunction with VLTOR's CASV handguard system. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the patent pending Auto Lock Lever system to accommodate both in spec and out of spec rail systems.