Magnum Research Black Barrel For Desert Eagle Md: BAR446, The entire Mark XIX component system is based on a single platform. With it’s gas operation, rotating bolt and all steel construction, this is the heart of the firearm. Once you’ve purchased a Mark XIX Desert Eagle you can change the barrel length or the caliber in seconds, if you have the appropriate components in hand. Extra barrels and bolt assemblies are available in a variety of calibers and finishes. , Gauge/Caliber: 44 Remington Magnum Length: 6″ Model: Desert Eagle Chokes: N/A Sights: N/A Bore-Rifled: N/A Finish: Black Type: # of Chokes: Choke Type: , Manufacturer: MAGNUM RESEARCH INC, Model: BAR446