SIG Sauer P320 Spectre Comp Custom Works 9mm, Full-Size, 4.6 in Threaded Barrel, Integrated Compensator, 21+1 Capacity
This SIG Sauer P320 Spectre Comp from Custom Works pairs a full-size 9mm platform with a factory upper that integrates a single-port compensator and an optics-cut slide. It features a gold-colored 4.6 in threaded barrel (1/2x28), a flat skeletonized trigger, and a full-size polymer grip module with a flared magwell. The FCU was purchased separately and installed into the grip module, creating a clean, purpose-built configuration with "CUSTOM WORKS" slide markings and "NEWINGTON, NH USA" markings on the frame/grip module.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Firearm is in very good shape. The optic cover plate is not included. There are minor scuff marks on the barrel. The bore is clean and shiny.
What’s Included
- SIG Sauer P320 Spectre Comp Custom Works 9mm pistol
- 1x 21-round extended-length steel magazine with numbered witness holes
- Installed flared magazine well funnel
The Spectre Comp upper includes an integrated single-port compensator with the front sight mounted on the compensator body. The slide adds practical features such as front and rear cocking serrations, lightening windows, top-strap texturing, and an optics cut. The slide bears the "CUSTOM WORKS" marking, while "NEWINGTON, NH USA" appears on the frame/grip module above the trigger area.
The 4.6 in gold-colored barrel is threaded 1/2x28 and is marked "9mm x 19 1/2-28." Combined with the compensator-equipped upper, this setup provides a distinctive Custom Works configuration in a full-size format.
Controls and ergonomics include a reversible magazine release and a flat, skeletonized trigger. The full-size polymer grip module is paired with a flared magwell funnel (installed) for streamlined reloads.
The pistol uses a striker-fired action and includes a full-length Picatinny accessory rail on the dust cover. Sights are iron: a green-dot front dovetailed into the compensator and a black serrated rear notch dovetailed to the slide. Capacity is 21+1 with the included extended-length magazine.
This example was assembled with an FCU that was purchased separately and installed into the grip module, aligning with the modular design of the P320 platform while retaining the Custom Works Spectre Comp slide and components noted above.