| 21. | How the movement of the bolt is controlled is where blowback systems differ.
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| 22. | It used roller-delayed blowback used on the CETME / HK rifles.
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| 23. | It used lever-delayed blowback for its operation.
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| 24. | The Model L is a selective fire, roller-delayed blowback firearm.
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| 25. | Typically recoil energy from a fired round is blowback.
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| 26. | These guns were air-cooled and used a gas blowback recoil system.
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| 27. | The Nkm wz . 38 FK feature blowback operation.
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| 28. | Not to mention the tremendous and interesting blowback that such wide dissemination can generate.
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| 29. | Between 1883 and 1885 Maxim patented gas, recoil and blowback methods of operation.
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| 30. | It also fired from a closed bolt along with using blowback for its action.
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