First two links are exclusively about rifles, not the bombs and shells being used on families in Gaza. The third article says:
When asked about the allegation, several U.S. officials said there was no change in U.S. policy or any deliberate delay in delivering previously promised aid or weapons sales to Israel.
Your last two articles say that three months ago the administration was considering thinking about exploring the possibility of debating the merits of slowing weapon deliveries.
It’s not pragmatic to twiddle your thumbs while your weapons are used to commit atrocities. It’s evil.