AR-15

The improvement I like best for the AR-15 is the flat-top upper. It gives you more options for sighting and makes the rifle more scope-friendly. Plus, you can add quick-on-and-off peeps and front sights. Here's a look at AR-15 optics.

This short video (no sound) gives you a closer look at the Gerber eFECT AR-15 tool.

Installing a new AR-15 trigger can make a world of difference. Several companies make great aftermarket AR parts. Let's look at some.

AR-15 scopes are pretty simple; after all, you're just picking a scope for a rifle. Of course in the defensive, law-enforcement or military context, durability becomes much more important than in hunting.