MGC AutoMag .44 AMP Model 180 This is the MGC 1st model, standard version (no blowback, but still cap firing/open barrel:))ABS construction but with metal bolt system, much stronger than the later ABS / HW bolts. A great model, rare and great barrel effects when fired, a true MGC classic. Comes boxed with 6 reusable cartridges, used but good condition, serviced. Load the mag, rack the slide, fire! rack the slide to eject the cart! uses 7mm caps.