We all know how a conventional internal combustion engine works, with a piston and a crankshaft. But that’s by no means the only way to make an engine, and one of the slightly more unusual ...

Chambered for 5.56mm NATO, the AR-18 used a then-new short-stroke gas piston system and innovated the folding stock. Despite these innovations, the AR-18 failed to win any large contracts.

Editor’s note: We are publishing these 3D animations to show the destructive power of the AR-15. The images may disturb some people. The wounds show the lethal force of the AR-15. But they are ...

The Piston Simulation function models the circular motion of a piston within a cylinder. It involves a chain of nonlinear functions. The response C is cycle time (the time it takes to complete one ...

The Detroit Pistons fall short in overtime to the Milwaukee Bucks after Giannis Antetokounmpo scores 59 points along with 14 ...

“Hit!” an instructor called. It was the first time that D, a nonbinary community organizer, had fired an AR-15.

Adou Thiero and Zvonimir Ivisic scored 19 points apiece, and No. 18 Arkansas used a big second-half run to beat Troy 65-49.

But a subpar third-quarter performance led to the Pistons (5-8) giving up an 18-point lead en route to a 127-120 overtime ...

J.B. Hunt Transport Services Inc. announced changes to its executive leadership team Monday. The transportation company said Nick Hobbs has been named president of highway and final mile services, ...

No. 18 Arkansas hosts the Troy Trojans after Adou Thiero scored 24 points in Arkansas' 72-67 loss to the Baylor Bears.

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