We came across this great free sample pack. It includes the sample chops, loops, effects and other stuff. The pack is inspired by suicide boys, bones, earl sweatshirt, tyler, clams casino, pretty much any rap artist out there. This pack will save you a lot of time saving time chopping the sounds. So go and give Bassment some love and follow him at Youtube.
Note: Not all sounds are royalty-free. Many are and some are not. You will sure notice some famous sound that are not.