SIG Sauer P320 Custom Works DH3 9mm, Full-Size, 5 in Barrel, Tan Slide, Fiber-Optic/Adjustable Sights, 21+1
The SIG Sauer P320 Custom Works DH3 is a full-size, competition-focused 9mm with a 5 in barrel and long, tan-finished slide. It features multiple slide lightening windows, an optic cut with cover plate installed, and a gray polymer frame with aggressive grip texture. Purpose-built details like a frame thumb rest, removable flared magwell, and a flat-faced skeletonized trigger combine with a 21+1 capacity to deliver a capable, competition-oriented configuration.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The pistol shows minor evidence of prior use. The chamber is clean, and the rifling is sharp and shiny.
What’s Included
- SIG SAUER factory hard case (gray)
- SIG Custom Works "Certified Custom" documentation
- Safety instructions booklet
- 1x 21-round factory P320 steel magazine with extended basepad (marked "Made in Italy")
- Upgraded recoil spring
This Custom Works DH3 configuration pairs a 5 in barrel with a long slide that incorporates multiple top lightening windows to reduce reciprocating mass. The slide is finished in tan and includes both front and rear serrations for confident manipulation.
The slide is milled with an optic cut and arrives with a cover plate installed. Sight alignment is handled by a green fiber-optic front and a black adjustable rear, providing a precise, competition-friendly sight picture.
Ergonomic features include a frame thumb rest for recoil control, a removable flared magwell to speed reloads, an extended beavertail, and aggressive grip texture with SIG medallions. The gray polymer frame also integrates a 1913/Picatinny 5-slot accessory rail on the dust cover.
It uses a striker-fired system with a flat-faced, skeletonized trigger for a consistent pull. The pistol is built on the modular P320 FCU architecture and is noted as having no external manual safety. Capacity is listed as 21+1, and the included factory magazine features an extended basepad and is marked Made in Italy.
Origin is the USA, with markings indicating NEWINGTON, NH, USA. This example also includes an upgraded recoil spring as part of the package.