I know this is a niggle but its one of those things that give 40K its flavore

Why is everyone using the blood angels weapon restritions?
the chapters have different ideas as to who may use what weapons.

Dark Angels
Dark Angel Sargents ONLY use power sword and Stormbolter, they do have an alternate weapon setup but it is for outside of a hulk.

'Assault' terminator's may use any combo of power fist/chain fist & stormbolter, Thunder hammer and Stormshield or lightning claws.

Ultra Marines
Ultra Marine Sargents use power sword and Stormbolter, they can however use specalist combo weapons which alow them to bouble up as a heavy when needed

'Assault' terminator's may use any combo of power fist/chain fist & stormbolter, Thunder hammer and Stormshield or lightning claws.

Space wolves
Space Wolves allow any squad member to carry a SIngle Lightning claw instead of a power fist/Sword.