Mate, do you know who Theodore Kaczynski is? That man made bombs out of fertilizer, same with Timothy McVeigh. There's also a nice manual from the U.S. Army that was released to the public thanks to the Freedom of Information Act that describes the workings of improvised explosives.
No one who was let in to the Capitol Building by the DC Police was armed with anything. The whole thing was a propaganda scare by leftists so it would demonize Trump supporters. Also, many of the shootings happen due to factors like mental health and possibly encouragement from alphabet soup agencies, maybe we should look into that rather than take peoples' guns away. That ever cross your cock brain?