Duncan's Gunworks
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From personal defense to hunting season, Duncan's has the right firearms solution for you.  We stock a full line of handguns, shotguns, rifles, ammo, optics, knives, flashlights, safes, hunting gear and accessories and aim to be your one stop shop for all of your firearm needs.

We carry a huge inventory of new and used guns from all the leading manufacturers as well as the rare and specialty guns you have been looking for.

Our gunsmiths are experienced with basic jobs like rebluing, trigger jobs, cleaning, scope mounts, and recoil pads but also specialize in the tough repairs and modifications for your guns.  We can even build your dream gun, custom made for you! 

For almost 70 years, Duncan's has been providing personal service, superior knowledge and exceptional value to Southern California residents and to customers all around the world! 

Duncan's Gunworks
1619 Grand Ave.
San Marcos, CA 92078
(760) 727-0515

Hours of Operation:
9:00 a.m. to 5:00 p.m.
Tues & Thurs 9:00a.m. to 7:00 p.m.
SunĀ & Mon: Closed

Located in San Marcos Ca right off HWY 78.

Serving Locally:
San Marcos
Camp Pendleton
Valley Center
Del Mar
La Jolla
Del Mar
El Cajon
Mira Mesa 

With customers coming from:
All over San Diego county
Orange county
Imperial county
Riverside County
San Bernardino county
Los Angles county

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