Description
The Sig Sauer P320 Spectre Comp 21 Round is a SIG Custom Works build, which means it carries the machining and finish work the standard production line does not offer. MAG5 Firearms stocks it with a threaded and compensated 4.6-inch barrel, a stainless frame, a laser-engraved XSeries grip module and twenty-one rounds on board.
What the Compensator Buys
Ports at the muzzle vent gas upward as the bullet clears, driving the front sight down against recoil rise. On a full-size 9mm that already tracks flat, the effect is dramatic. The dot barely leaves the target between shots.
The barrel is threaded as well, so the Sig Sauer P320 Spectre Comp 21 Round can take a suppressor in place of the compensator. Most compensated pistols do not leave that option open.
Stainless Frame and Custom Works Finish
A stainless steel frame puts real weight low in the hand, which is the other half of why this pistol shoots as flat as it does. Polymer-framed competitors cannot match it without adding a tungsten module.
Laser engraving on the XSeries grip module is not just decoration. The pattern gives a positive hold without the sandpaper feel that shreds a cover garment.
Sig Sauer P320 Spectre Comp 21 Round Specifications
| Manufacturer | SIG SAUER |
|---|---|
| Model | P320 Spectre Comp |
| Part Number | P320V004 |
| Caliber | 9mm Luger |
| Capacity | 21+1 Rounds |
| Barrel Length | 4.6 inches |
| Barrel | Black Steel, Threaded with Compensator |
| Slide | Black Cerakote, Optic Ready, Serrated Stainless |
| Frame | Black Stainless with Beavertail and Picatinny Rail |
| Grip Module | Black Laser Engraved XSeries |
| Action | Striker Fired |
| UPC | 798681677351 |
Sig Sauer P320 Spectre Comp 21 Round Optic Cut and Rail
The slide arrives cut for a red dot, so an optic mounts with no milling. Given how flat this pistol tracks, a dot stays in the window through an entire string rather than jumping out of it.
A Picatinny rail under the dust cover takes a weapon light, which makes this more than a range gun despite its Custom Works pedigree.
Capacity and Magazines
Twenty-one rounds is the full-size P320 magazine, and those magazines are among the most widely produced pistol magazines in the country. Spares are inexpensive and consistently in stock.
A ten-round version of this same pistol is cataloged separately for capacity-restricted states.
Custom Works Production and Transfer
SIG Custom Works runs are limited and cannot be reordered once a shipment sells through, which is why these pistols tend to hold value better than standard production guns.
MAG5 Firearms is a licensed FFL dealer in Pennsylvania. This pistol ships new in the factory case with magazines and documentation, transferred through your local FFL.
Other Sig Sauer P320 Spectre Comp 21 Round configurations and compensated pistols are listed in our handgun catalog. Factory specifications are published by SIG SAUER.
Every Sig Sauer P320 Spectre Comp 21 Round sold by MAG5 Firearms ships new in the factory packaging with the accessories SIG SAUER includes, and transfers to your chosen FFL. The Sig Sauer P320 Spectre Comp 21 Round is a regulated firearm and we verify licensing before any order leaves the shop.
Ownership Tips
Before your first range trip, read the owner’s manual and practice loading, unloading, and field-stripping with an empty gun. Clean and lightly lubricate the pistol after each session, paying attention to the slide rails, barrel hood, and breech face, and use quality gun oil sparingly. Inspect magazines for dirt and weak springs, and replace springs on a regular schedule if you carry the gun daily.
For carry or home defense, test the ammunition you plan to rely on with at least a few boxes to confirm reliable feeding. A quality holster that covers the trigger guard, a sturdy belt, and a weapon light round out a dependable setup. Check your state and local rules on magazine capacity and transport before ordering, and we will ship to the licensed dealer of your choice.
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