11. For outstanding Ideas and Projects, they will be funded to complete a prototype model . 12. These models can be regarded as providing a compromise between exemplar and prototype models . 13. The prototype Model 167W was powered by twin-row Pratt & Whitney Browning machine guns. 14. A variation of this theory is the prototype model . 15. They were only installed after tests of prototype models revealed thermal problems of the engine. 16. The Razr3 consisted of one prototype model , the VE1. 17. Even though the game was never released, several prototype models were produced for testing in arcades. 18. A prototype model was demonstrated in May 2005, but Motorola has now halted all FED-related development. 19. Prototype models had rough bolt movement and triggers, but they were smoothed out in production examples.20. "There's always going to be a difference between the prototype model and what the final product is.
