11. By rotating the handle quickly a high rate of fire could be achieved, or slowly, single shots. 12. The MK 108 was optimized for a high rate of fire at the expense of ballistic performance. 13. This high rate of fire is due mostly to the floating barrel and the lightweight titanium frame. 14. They finally had a better electronic suite and a 76 mm gun with high rate of fire . 15. Its unique operating system produced a very high rate of fire of 1, 600 rounds per minute. 16. The open-bolt system is often used in submachine guns and other weapons with a high rate of fire . 17. The weapon is lighter in weight and has a high rate of fire and has an unusual trigger guard. 18. It was a simple, reliable weapon with a high rate of fire made possible by a semi-automatic breech system. 19. The MP2 is a blowback-operated weapon that fires from an open bolt with an extremely high rate of fire . 20. These had a high rate of fire at 450 rpm, but this was hampered by the awkward 30-round magazine feed.