The short-version mounts are suitable for use on all types of bolt action rifles and AR10 weapons. The 125 mm long contact surface ensures a secure and play-free fit on every Picatinny rail. Available ERA-TAC Gen 2 30mm Mount with Levers MPN Height Inclination T4013-0023 1.50" 0 MOA T4013-0033 1.89" 0 MOA T4013-2025 1.50" 20 MOA T4013-2035 1.89" 20 MOA Available ERA-TAC Gen 2 30mm Mount with Nuts MPN Height Inclination T5013-0010 0.98" 0 MOA T5013-0015 1.18" 0 MOA T5013-0020 1.38" 0 MOA T5013-0023 1.50" 0 MOA T5013-0033 1.89" 0 MOA T5013-2010 0.91" 20 MOA T5013-2015 1.10" 20 MOA T5013-20221.38" 20 MOA T5013-2025 1.50" 20 MOA T5013-2035 1.89" 20 MOA ERATAC Gen 2 One-Piece Mount 30mm 0 MOA 23mm 0.906" High Safety Levers T4013-0023