The Sightmark Tactical 30mm Fixed/LQD/w/ 20MOA Cantilever Mount is a fixed mounted riflescope base compatible with 30mm scope tubes. This mount features a two-inch forward offset allowing the use of riflescopes requiring a greater eye relief and more comfortable cheek placement on AR-style rifles. The 30mm fixed/LQD/w/ 20MOA mount is constructed of aircraft-grade 6061-T6 aluminum and finished in a matte black, non-reflective coating. Cantilever mounts make transferring your optic easy. This mount is perfect for installing and removing an optic from your firearm without losing zero.Features Included in Package 30mm Fixed/LQD/w/ 20MOA Cantilever Mount Hex Key Features 6061-T6 aluminum body Fits Picatinny rails Matte black, non-reflective finish Fixed/ LQD mount/Fixed mount w/20MOA 30mm ring Easier transferring from firearm to firearm 2 inch forward offset Locking quick detach mount design Fits 30mm riflescope tubes