LaRue Tactical Dual QD Lever Picatinny Riser 5.5in Black. This dual QD lever raises any optic by 5/8" above it's host rail. Some guys are putting it on the underside of the handguard and mounting vertical grips and flashlights to it...makes for a pretty good setup. The LT101 is 5.5" long and provides 13 MIL-STD-1913 lug spaces. Like all LaRue mounts it is precision-machined out of bar-stock aluminum and matte black anodized. The LaRue Speed Levers provide outstanding return to zero; the optic can be removed and replaced without loss of zero. Guaranteed. Specifications for LaRue Tactical Dual QD Lever Picatinny Riser: Manufacturer: LaRue Tactical Color: Black Condition: New Last Chance: Yes Package Contents: LaRue Tactical Dual QD Lever Picatinny Riser LaRue Tactical LT101: Dual QD Lever Picatinny Riser 5.5in Black