auto177It’s time to spend less time hassling with CO2 cartridges and more time shooting. The 400e, as the first production full-auto .177 BB gun powered entirely by electricity, offers unmatched convenience. The 400e Gen 2 Metal givesAbout this item . TARGET PRACTICE - Train the accuracy of shots with the S SAUER MCX .177 Pellet Air Rifle; Based on the orinal desns of the S MCX, this