The Wheeler MSR Cantilever 1 Piece mount is a 6-hole tactical 1 piece rings with integrated anti-cant indicator. This mount is perfect for adding your favorite scope to the AR-15 platform. The 2" extension allows the shooter to mount the scope at a comfortable distance for proper eye relief. The swing out anti-cant level helps keep the reticle level while shooting at distance.Features: 6061 aluminum construction with flat top ring 2" cantilever extension 6-hole ring design with retained 1/2" lock nuts that secures to the picatinny rail Swing out anti-cant level Includes torx screws