"As mentioned, it was the first mass produced gas operated semi rifle, and we're talking ca 1910."
I thought the Browning-designed Remington Auto Rifle was the first, as it was introduced and marketed in 1906.
It later was renamed the Model 8.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.