1.Explain how the rollers in the roller-delayed blowback system delay the opening of the action.
The rollers in a roller delayed blow-back system works like a locking lug. In the forward position the rollers push into grooves and help to ensure the firearm is in battery before being fired. This delays blowback because it requires a little more pressure to push the rollers in and then allow the slide or bolt to cycle.
2.Identify one modern firearm that uses the gas-delayed blowback system and explain how the gas is used to delay the system.
The Walther CCP 9mm uses the Gas-Delayed blowback system. This system uses a small hole just after the bore of the barrel to allow some gas to escape while pushing the projectile out of the muzzle. The pressure will eventually transfer to the slide for normal operation but this little bit of gas that escapes delays the blowback of the slide. Walther calls this Softcoil instead of recoil.
3.Levers are usually used to create a mechanical advantage. How do the levers in the lever-
delayed blowback system do just the opposite?
The lever used in the lever-delayed blowback operating firearms creates a mechanical
disadvantage. This lever is internal and rotates until it unlocks the bolt or slide allowing freedom of motion for extraction and ejection of the spent casing. The time it takes to unlock or rotate that lever creates the delay.
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