Of course they will take away our guns. Biden is on record as saying "more gun control won't stop mass shootings but we have to try.".
So, if gun control won't stop shootings, why push for it? Simple, erode your rights and once they can ban one style of guns, based on an arbitrary specifications, they will continue to expand that ban until your guns are gone.
By stating that "no one wants to take your guns" they simply hope that enough people will believe it for long enough to start the banning process. Once it starts, it won't end.
"He who laughs last, laughs dead." Homer Simpson