AR Sponsor
Posted: 10/15/2013 8:39:41 PM EDT
| This may seem like a dumb question, but what stops the bolt from moving backwards after a round has been fired? I assume it is the buffer hitting the rear of the buffer tube, must be why the buffer has a nylon tip to cushion the impact. Also other than models like the Remington 7400 is there any other rifle that uses a detachable magazine in a 30 06 size, thanks. |
|
Quoted:
This may seem like a dumb question, but what stops the bolt from moving backwards after a round has been fired? I assume it is the buffer hitting the rear of the buffer tube, must be why the buffer has a nylon tip to cushion the impact. Also other than models like the Remington 7400 is there any other rifle that uses a detachable magazine in a 30 06 size, thanks. The spring slows the speed of the bolt and buffer, but you are correct about the nylon bumper hitting the back of the receiver extension. Browning has their BAR, both the modern sporting version and the WWII versions. And don't forget the venerable M1 Garand. Edit- just saw the part about detachable mag- not the garand then. You can get a Savage bolt action with a factory detachable mag, not a semi auto however. |
|
Quoted:
This may seem like a dumb question, but what stops the bolt from moving backwards after a round has been fired? I assume it is the buffer hitting the rear of the buffer tube, must be why the buffer has a nylon tip to cushion the impact. Also other than models like the Remington 7400 is there any other rifle that uses a detachable magazine in a 30 06 size, thanks. Welcome. The bolt of the AR15 or AR10 is stopped from moving rearward by the barrel extension, otherwise there would be a case failure with an explosion directing gas into the action at destructive speeds. The bolt carrier is moved rearward by gas acting upon it through the gas system, which unlocks the bolt with camming action. Then the entire bolt carrier group travels rearward with the buffer, compressing the action spring until the rear buffer pad kisses the inside of the extension tube, which provides enough spring response to give the buffer and bolt carrier group the inertia they need to return forward along with spring action to strip the next cartridge, chamber it, and cam the bolt into a locked position. The Browning BAR sporting rifles use detachable box mags. |
AR Sponsor