If I take a revolver pipe rifle and change out the stock to a pistol grip does it just become a regular revolver?
Yes. Similar to if you take a stun baton and remove the electricity mod, it becomes a security baton. Didn't realize this at first, but appears most items are just variations of the mods. Made a gun to a rifle which turned into a sniper rifle.
Really enjoying the game so far. 20ish hours in, still only in the top right area. Playing it the same way as FO3 and NV. I just go "oh I wonder what is over there" and run there.
Also, here is a good mod
Playstation 4 Buttons at Fallout 4 Nexus - Mods and community
Adds visuals for the playstation buttons if you are using a DS3/4 controller instead of an xbox one.
EDIT: To enable mods
go to documents, my games, fallout 4. Then edit fallout4prefs.ini and under [launcher] add
bEnableFileSelection=1
Then edit fallout4.ini
And under [Strings] find the line
sResourceDataDirsFinal=STRINGS
and change it to
sResourceDataDirsFinal=STRINGS\, TEXTURES\, MUSIC\, SOUND\, INTERFACE\, MESHES\, PROGRAMS\, MATERIALS\, LODSETTINGS\, VIS\, MISC\, SCRIPTS\, SHADERSFX\
should be good to go.