Magnum Research Barrel .50 Action Express 6 Picatinny Accessory Rail Fits Desert Eagle MK XIX 50AE Polished Chrome Finish Silver. 50 AE. All steel construction. Available in multitude of finishes. Picatinny style accessory rail. Simple installation (when switching from .357 magnum you will need to change the bolt assembly). Please refer to the DE owners manual for installation instructions. Specifications for Magnum Research Barrel .50 Action Express 6 Picatinny Accessory Rail Fits Desert Eagle MK XIX 50AE Polished Chrome Finish Silver: Manufacturer: Magnum Research Color: Silver Barrel Length: 6 in Additional Features: Desert Eagle Chrome Barrel Handle Color: Silver Features of Magnum Research Barrel .50 Action Express 6 Picatinny Accessory Rail Fits Desert Eagle MK XIX 50AE Polished Chrome Finish Silver: 6 Barrel" Package Contents: Magnum Research Barrel .50 Action Express 6 Picatinny Accessory Rail Fits Desert Eagle MK XIX 50AE Polished Chrome Finish Silver