The Sig Sauer Reserve Collection P320-SXG is a full-size 9mm handgun built for shooters who refuse to compromise on fit, finish, or shootability. This is a metal-framed pistol engineered around precision: a stainless steel frame and slide paired with a 3.9-inch compensated barrel designed to tame recoil and muzzle flip without sacrificing the snappy handling that makes the P320 platform legendary. The high-polish DLC finish isn't just for looks—it's a statement that this gun was built for someone who knows what they want and expects it to hold up.
The SXG configuration comes with three 21-round steel magazines, so you're set for the range or a duty rotation right out of the box. XRAY3 day/night sights mean you can shoot confidently in varied light, and the optic-ready slide (PRO footprint) gives you the flexibility to add a mounted red dot when your mission demands it. The GridLOK grip panels and full-face trigger are refined touches that elevate both control and trigger break. An integrated M1913 accessory rail handles lights and lasers. Manual safety is included for shooters who prefer that control. At 46.2 ounces loaded and 8.2 inches overall, it carries like a serious defensive or competition tool—not a pocket gun, but not unnecessarily heavy either.
This is a small-batch Reserve Collection offering, which means it's built to tighter tolerances and more exacting standards than the baseline P320. If you run competition, train seriously, or simply want a full-size metal 9mm that shoots as good as it looks, the P320-SXG rewards disciplined shooters with consistency, control, and a trigger that begs to be pressed clean.
| Caliber | 9mm Luger |
| Pistol Size | Full-Size |
| Barrel Length | 3.9 inches (99.06 mm) |
| Barrel Material | Stainless Steel |
| Barrel Finish | Compensated |
| Slide Material | Stainless Steel |
| Slide Finish | High Polish DLC |
| Frame Material | Stainless Steel |
| Frame Finish | High Polish DLC |
| Overall Length | 8.2 inches |
| Overall Width | 1.6 inches |
| Height | 5.5 inches |
| Weight (with magazine) | 46.2 ounces |
| Grip Type | GridLOK Panels |
| Grip Material | Stainless Steel |
| Grip Color | Black |
| Trigger Type | Flat-Faced, Striker-Fired |
| Trigger Action | Striker |
| Sights | XRAY3 Day/Night |
| Sight Radius | 5.9 inches |
| Manual Safety | Yes |
| Accessory Rail | M1913 |
| Optic Ready | Yes (PRO Footprint) |
| Magazine Capacity | 21 rounds |
| Magazines Included | 3 × 21-round Steel Magazines |
The slide is cut and milled for the PRO footprint, which accommodates modern red dot optics designed for that mounting standard. Your gunsmith or an optics retailer can confirm compatibility with your specific sight choice.
No, the barrel is not threaded. The gun features an integrated compensator on the standard barrel.
Three 21-round steel magazines ship with the pistol, giving you solid capacity out of the box.
The full-size frame, flat-faced trigger, low recoil thanks to the compensator, and optic-ready capability make this well-suited for shooters training or competing with modern duty or sport pistol platforms. The tight build tolerance and refined finish of the Reserve Collection add confidence on the line.
Sig Sauer
Sig Sauer
