If you are a big fan of shooting, then proper install bipods on your AR 15 is crucial for shooting accuracy.
Bipod greatly improved the stability of shooting,so must choose the right bipod and install properly.
In the most case, it's based on different structure design, some attach to swivel stud on the rifle, some attach on rifle directly. Picatinny rail is the typical one.
For AR15, the basic installation process is-