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Located in San Marcos, CA   760-727-0515

Products and Services

A Great Range of Gun Sales and Services

If you are in need of a new gun or service for your current piece, look no further than Duncan's Gunworks. Our knowledgeable staff has a combined 100 years of knowledge to help you find the right gun for your needs.

From hard-to-find collectibles and antiques to new and modern firearms from leading manufacturers, we have it all. You will also find all the accessories, sights and ammo you need to round out your stock. Personalize your guns with our engraving, customization and modification services or trade-in your unwanted guns to us.

Our certified gunsmiths will help you with all your gun related needs. New guns come with manufacturers' warranties and most used guns come with a 6-month warranty. We are members of the NRA (National Rifle Association), the NSSF (National Shooting Sports Foundation) and the CRPA (California Rifle and Pistol Association).

New and Used Guns and Accessories

  • New guns from leading brands
  • Used and consignment guns
  • Great selection of ammo and accessories
  • Handcrafted, custom gunsmithing
  • Custom guns available
  • Optics and sights
  • Recoil pads
  • Muzzle breaks

Certified Gunsmiths for Superior Services

  • Standard and specialty repairs
  • Gun cleaning and refinishing
  • Accessories and modifications
  • Sight and scope installations
  • Custom gun engraving
  • We buy or consign your unwanted guns
  • Gun trade-ins
  • Memberships for local shooting ranges
  • Firearm storage services
  • Stock and barrel repair and replacement
Custom Modifications
Visit 1619 Grand Ave 
San Marcos, CA 92078
Heckler & Koch
Sig Sauer
Smith & Wesson
Springfield Armory
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