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About Us

Duncan's Gunworks Gun Store Shop San Marcos California San Diego County Firearms Gun Storage

Our History


For nearly 70 years, Duncan's Gunworks has built a solid foundation of honest, knowledgeable and helpful personal service.  We are a family owned small business dedicated to serving our Southern California Community with exceptional products and service.  

Everyday, our staff with decades in the firearms industry, helps beginners and expert gun owners alike find the right firearm for their needs.  


We believe that a good reputation and a premier customer experience is the solution to a strong and lasting customer relationship.  

Shotguns Rifles Ammunition Ammo Guns Sale San Marcos California North County San Diego

We have what you need

We carry a huge inventory of new and used guns from all the leading manufacturers.  Shop from thousands of items in our online store or come to our shop in San Marcos, CA to see the wide selection of new, used, consignment and rare collectors firearms on the shelf.  In-store or online you'll find the handguns, shotguns, rifles, ammo, optics, knives, flashlights, safes, hunting gear and accessories you have been looking for. 

Gunsmith Shotgun Rifle Handgun Antique Fine Guns Repair Cleaning

Gunsmithing Done In-House

Our gunsmiths are great with basic jobs like rebluing, trigger jobs, cleaning, scope mounts and recoil pads but we are best known for our craftsmanship on the tough repairs jobs, modifications and engraving on your guns.  We can even build your dream gun, custom made exactly the way you want it!   

Take a video tour of our store

Duncan's Gunworks has one of the largest selections of firearms and accessories in California combined with unparalleled sales and gunsmithing knowledge.