Quote:
Originally Posted by SomethingWitty
No.
The only reason that an AR-15/10 would shear at the front or rear take-down pins is because someone fell on it at just the right angle, or tried to use it as a pry bar/lever. Maybe there is some stress on the take-down pins holes because of some slop between the lower and the upper, but it is very miniscule.
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I know the mechanics of the AR action, thank you.
My question dealt with the kinetic energy after the bolt was unlocked and started the ejection. After the bolt is unlocked there is no metering of the rearward movement other the mass of the piston and resistance of the recoil spring.
In affect the 5.56 bolt must be creating the same kinetic energy as the 50 Beowulf,, or something will break???
Also,, I didn't say
shear,, The frame actually dissolved from perspiration. 15 to 20 % of the M16 we carried had moderate to severe rot in the area of the front pin.