• Fast Shipping
  • FFL Transfers
  • No CC Fees
  • 4.9 Google Rating
  • (313)779-3877
  • St. Clair Shores, Mi
Account
Wishlist
Cart
AR15 Parts

AR15 Parts

Browse our inventory of AR15 parts from trusted brands like FAB Defense, Armaspec, KNS Precision, Odin Works, and Shield Arms. ICB Firearms carries quality AR15 parts for builders and shooters who need dependable components for upgrades, repairs, maintenance, and custom rifle setups. You can shop related categories like AR lower parts, AR upper parts, and AR10 parts when you need matching components for complete builds or platform-specific projects. We also stock AR rifles and AR magazines to help round out a dependable setup for training, range use, and regular ownership.

Showing 401–416 of 842 results

AR15 Parts Buying Guide

Shop AR15 parts online by comparing fitment, checking current availability, and reviewing specifications such as receiver pattern, barrel compatibility, handguard style, and intended use. A solid parts order starts with the exact AR15 setup you own, then moves to function, installation, and the rest of the rifle.

These are the details AR15 parts buyers should check before checkout:

  • Start with exact platform fit. Buyers working on AR rifles and AR pistols should confirm the part matches the correct AR15 pattern before anything else.
  • Separate replacement needs from upgrade goals. A worn spring, damaged control, or tired rail component calls for one type of purchase, and a trigger, grip, or handguard change points another way.
  • Check how the part fits the full build. Many shoppers review AR lower parts, AR upper parts, and rifle magazines in the same pass so the setup stays consistent.
  • Think about optics and handling at the same time. Rail space, barrel setup, and upper fit can affect how the rifle works with gun scopes and the rest of the platform.
  • Review installation before you buy. Some AR15 parts swap in with simple tools, and others may need fitting or a gunsmith.

Local And Compliance Notes

Browse AR15 parts online, or visit our gun store in St. Clair Shores, Michigan. ICB Firearms serves customers from nearby cities including Macomb, Clinton Township, Grosse Pointe, Warren, and Royal Oak.

Most AR15 parts do not follow the same transfer process as serialized firearms. Shipping details, item restrictions, and checkout steps can still vary by part and destination, so review order information before you place the order.

Fitment and safe installation still matter after the sale. Contact the shop for current store policies, accepted identification, and any questions tied to shipping, pickup, or compatibility.

Frequently Asked Questions About AR15 Parts

1. What counts as AR15 parts?

+

AR15 parts can include controls, upper components, lower components, rail-related pieces, and other platform-specific items tied to an AR15 build.

2. How do I know if an AR15 part fits my build?

+

Start with the exact AR15 pattern and rifle setup you own. A close match is not enough when fitment matters.

3. Do AR15 parts fit every AR-style firearm?

+

No. AR15 parts do not fit every AR platform, so compatibility needs a close check before you order.

4. Should I shop AR15 parts with AR lower parts or AR upper parts?

+

Many buyers do. That can make it easier to keep the full rifle setup consistent.

5. Does caliber matter when shopping AR15 parts?

+

Sometimes. Platform pattern comes first, though caliber can affect compatibility on some builds.

6. Can I order AR15 parts online?

+

Yes. Review the item details and shipping information before checkout.

7. Do AR15 parts require a firearm transfer?

+

Most do not, though exact requirements can depend on the item. Check the order details before you buy.

8. Can I install AR15 parts myself?

+

Some parts are simple to install, and others may need tools or a gunsmith. Check fitment and installation details before you begin.

Are you 18+?

You must be 18 or older to enter this site

Yes, I am 18+