Well now. That last picture answers quite a lot of questions. Welcome to the forums fadetoblack172
Here is my tricked out 870. Its a basic older 870 Express Magnum with 870P parts. 18.5" barrel, Surefire forend light, Wilson Jumbo Head safety and hi viz shell follower, Wolff springs, XS 24/7 night sights with the "small" front dot, and a GG&G single point sling adapter. (No side saddle) The best thing about it is the action, which is smooth as glass.
Rob