Just do the bumps as floaters, like slightly squashed halved cylinders as in the example above to the right, but extrude the open edgeloop (where they touch the body) outwards so it lies flat against the surface of the gun. Less messy than modeling them into the body, and more flexible, but still smoothing as if they're…
Any tips on how I can get rid of this crease? I'm using the latest version of Maya! The above screenshot is a smooth preview, and the bottom ones show my current topology (left is w/ smooth preview, right is w/o)