The American Rifle Company M-Brace Picatinny Rail Accessory is extremely strong and lightweight. The M-Brace Rail Accessory is anodized for excellent corrosion resistance and is compatible with the M-Brace mount. The M-Brace Rail Accessory features a locking interface with serrations that positively locate the rail and withstand recoil forces without moving or slipping. FeaturesStrong and lightweightCorrosion resistant Compatible with M-Brace Locking interface withstands recoil without moving or slipping