The name A-15 refers to DPMS' .223/5.56 caliber, gas-driven rifles. But within that family you can find a number of different models and configurations—including the latest Gun of the Week, the DPMS A-15 Tactical Precision Rifle (TPR).
If you're looking to build your own AR from the ground up, the A-15 is an ideal platform to customize. That said, DPMS also provides a catalog of purpose-built rifles that are upgraded and assembled with popular aftermarket accessories and parts—and the TPR is one of those rifles.
You can get a closer look at the TPR below, in a video hosted by American Rifleman Associate Editor Joseph Kurtenbach.