
Originally Posted by
HansTheHobbit
That article contradicts itself.
Sounds to me like the AR falls into that category.
As we've gone over already, and as has been pointed out many times before, Stoner was trying to demonstrate that his design was unique to get patents. If we start calling ARs piston guns, then we'll have to call everything a piston gun, as the gas must impinge against something, and that something will thus qualify as a piston. Like I've said many times already, the gas key on the Ljungman is functionally a long stroke piston.
A piston gun means that the carrier is actuated by a piston. DI means that the carrier is actuated by gas. If you try to bend that definition then it loses all meaning. Again, I accept that the AR is a unique type of DI, perhaps even deserving its own terminology. But it's not a piston gun by any stretch of the imagination.
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