Some excerpts from the bill:

A BILL

To amend the Internal Revenue Code of 1986 to increase the excise tax and special occupational tax in respect of firearms and to increase the transfer tax on any other weapon, and for other purposes.
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,

SECTION 1. Short title.

This Act may be cited as the “Gun Violence Prevention and Safe Communities Act of 2018”.

SEC. 2. Increase in excise taxes relating to firearms.

(a) In general.—Section 4181 of the Internal Revenue Code of 1986 is amended to read as follows:

“SEC. 4181. Imposition of tax.

“There is hereby imposed upon the sale by the manufacturer, producer, or importer of the following articles a tax equivalent to the specified percent of the price for which so sold:

“(1) Articles
taxable at 20 percent
:

“(A) Pistols.

“(B) Revolvers.

“(C) Firearms (other than pistols and revolvers).

“(D) Any lower frame or receiver for a firearm, whether for a semiautomatic pistol, rifle, or shotgun that is designed to accommodate interchangeable upper receivers.

“(2) Articles
taxable at 50 percent: Shells and cartridges.
”.
https://www.congress.gov/bill/115th-...x%22%5D%7D&r=1

H.R. 5087

A BILL

To regulate the importation, manufacture, possession, sale or transfer of assault weapons, and for other purposes.
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,

SECTION 1. Short title.

This Act may be cited as the “Assault Weapons Ban of 2018”.

SEC. 2. Definitions.

(a) In general.—Section 921(a) of title 18, United States Code, is amended—

(1) by inserting after paragraph (29) the following:

“(30) The term ‘semiautomatic pistol’ means any repeating pistol that—

“(A) utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round; and

“(B) requires a separate pull of the trigger to fire each cartridge.

“(31) The term ‘semiautomatic shotgun’ means any repeating shotgun that—

“(A) utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round; and

“(B) requires a separate pull of the trigger to fire each cartridge.”; and

(2) by adding at the end the following:

“(36) The term ‘semiautomatic assault weapon’ means any of the following, regardless of country of manufacture or caliber of ammunition accepted:

“(A) A semiautomatic rifle that has the capacity to accept a detachable magazine and any one of the following:

“(i) A pistol grip.

“(ii) A forward grip.

“(iii) A folding, telescoping, or detachable stock.

“(iv) A grenade launcher or rocket launcher.

“(v) A barrel shroud.

“(vi) A threaded barrel.

“(B) A semiautomatic rifle that has a fixed magazine with the capacity to accept more than 10 rounds, except for an attached tubular device designed to accept, and capable of operating only with, .22 caliber rimfire ammunition.
https://www.congress.gov/bill/115th-...bill/5087/text