The integrated Picatinny Rail is designed for the VISM VDGRLB Green Dot Reflex Sight with Red Laser. On top of the Advanced Dot Carry Handle is a channel compatible with the VDGRLB Red Laser. The Advance Carry Handle rail is also compatible with NcSTAR DXGAB, DDAB, DDABL, and the DDABG Micro Dot Reflex Optics. Folding Back-up Rear Aperture sight is at the popular 1?&';&'; AR15 sight height. Dual Auto-Locking Quick Release Mounts for attaching onto weaver/ Picatinny/ MIL-STD 1913 type rails. AR15 Advanced Dot Carry Handle provides a new stylish look with a lot of features: Dual Auto-Locking Quick Release Picatinny Rail Mounts, Folding Back-up Rear Aperture sight, and a Picatinny rail for mounting a reflex sight like the VISM VDGRLB.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }