Looking to buy, sell, or transfer a new or used firearm? Are you in need of gunsmith work? Want to build an AR, or add some accessories to your current rig? Please contact us for all of your firearms needs. 

We offer NRA Certified training classes as well as Illinois State Approved Concealed Carry instruction.

​Datum Arms will buy your used firearms from anywhere in the United States. Send us your used pistols, revolvers, rifles and shotguns, or bring them to our location and receive a legal transfer along with a quick, and safe payment transaction.  

Do you have a new or used firearm that you no longer want or need? Did you inherit a collection of guns that you don’t have any interest in keeping? Contact Datum Arms. We will purchase your legally owned firearms at fair Blue Book value for your particular firearm. We will buy one or one hundred no matter where you are in the United States.

Why choose Datum Arms?

Datum Arms is one of the Midwest’s premier used gun buyers with an A+ Gunbroker rating ensuring you the highest quality customer service and ethical standards. We are a federally licensed, well-established firearms sales and training company in the Chicagoland area. We have purchased numerous legally owned used firearms since we opened our doors.

Selling us your used firearm is very easy...first, we need to evaluate the condition of your used firearms so we can make you an accurate offer.

If you’re a Chicago area resident, simply bring your unloaded firearms to our shop located in Bolingbrook, IL. We will evaluate your firearms and discuss a purchase price based on the condition and Blue Book value. If you decide to sell us your firearms we will write you a check on the spot.  

If you are a resident of a state other than Illinois, you can send us your used firearms or email us a brief description and some photos of your firearms to sales@datumarms.com. You can send us your firearms via UPS or FEDEX. We will evaluate your firearms and contact you via telephone to discuss the values. If you decide to sell us your firearms, we will mail you a check for the agreed upon amount. If you decide not to sell your firearms, they will be shipped back to you the next business day and we pay the return shipping.  

That's it! It’s quick and easy and by selling your gun to Datum Arms, you are assured to get the top wholesale Blue Book value for your firearms. If you have any questions about selling us your firearms, please contact us at 630-452-6900 or sales@datumarms.com.

Veteran owned and operated


Firearm Sales & Training