The 98 cents’ worth of plastic shims that came with your new $1,800 semiauto might be the most important part of the whole shotgun. Stock shims let you fine-tune cast and drop to get a perfect fit—and ...

The starter is probably the last thing on your mind when you're building a trick new engine. You've usually got visions of horsepower dancing in your head, and as long as the starter turns the motor ...