A bill that would increase firearm regulations in Oregon is a reminder that states have vastly different gun laws.

In Idaho, for example, you can purchase a gun from a private owner without going through a background check. In Oregon, background checks are required for all sales.

The bill proposed to appear in the Legislature this year would require Oregonians to obtain a permit before buying a gun, limit the amount of ammunition a person could buy, outlaw magazines with a capacity of more than five rounds, and create gun locking and storage requirements.

If passed, Senate Bill 501 would make Oregon's firearms regulations among the strictest in the U.S. Compared to most other western states, Oregon already has stricter gun laws.

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Here's a look at five states that are among the strictest for gun regulations.

California

In California, all gun sales must go through a licensed dealer for a background check. Law enforcement agencies can deny a person a concealed carry license, according to the Giffords Law Center To Prevent Gun Violence, a non-profit organization that advocates for tighter gun regulations to bolster public safety.

California prohibits the manufacturing, sale and importing of large capacity ammunition magazines.

New Jersey

In New Jersey, permits from law enforcement are needed to purchase a handgun or a firearms purchaser identification card for unlimited purchasing. New Jersey law also forbids assault weapons and large-capacity ammunition magazines.

Connecticut

In Connecticut, residents need a permit from law enforcement to carry a handgun, unless it's on their property. The state also reports people who are disqualified from possessing firearms into a database for background checks of purchasers. Connecticut also prohibits assault weapons and large-capacity ammunition magazines.

Massachusetts

In Massachusetts, permits are required to purchase a firearm and a license is required to carry a firearm. Large-capacity ammunition magazines are banned. State law sets forth a process to temporarily confiscate firearms of people deemed a threat by family members, partners or police.

New York

In New York, all private firearm sales need background checks through a licensed firearms dealer. Handgun purchasers need to get a license first from their jurisdiction. Background checks also are needed to buy ammunition.

Contact reporter Ben Botkin at bbotkin@StatesmanJournal.com, 503-399-6687 or follow him on Twitter @BenBotkin1