LaRue Tactical developed this QD-mount for the T-1/T-2 & H-1/H-2 in order to provide users absolute-cowitness with iron sights. The LT751 is designed specifically for use with standard AR15 flat top receivers, with irons flipped in the "down" position. The "I-beam" design provides the user a better field of view and is lighter than the LT660 mount. Like all LaRue mounts, it is precision-machined out of bar-stock aluminum and matt black anodized to provide a durable non-reflective surface finish. The locking LaRue Speed Lever provides outstanding return to zero, the optic can be removed and replaced without loss of zero. Comes complete with replacement mounting screws (with wrench), QD adjustment wrench, vial of blue Loctite and Instructions.