Sig Sauer P211 Gt4 9mm 4.2 Blk Or 17/21Rd Romeo X
The Sig Sauer P211-GT4 is a purpose-built 9mm carry pistol that strips away excess length without sacrificing the performance shooters expect from a duty-grade platform. Built on Sig's proven P211 foundation, the GT4 combines a compact carry footprint with modern optics-ready capability—making it ideal for those who want genuine shootability in a gun sized for belt carry, not a range bag.
At the heart of this 9mm carry gun sits a 4.2-inch target-crowned bull barrel paired with aggressive duty-style slide serrations that deliver confident manipulation under stress. The carry-length SIG-LOC PRO optic-ready slide accepts modern red dots without adding unnecessary length, and the stainless-steel frame with its full 1913 Picatinny rail gives you flexibility to mount lights or lasers. Single-action trigger work comes from a skeletonized, flat-blade design tuned for a clean, repeatable break—no safety lever surprises, just predictable performance. Fully ambidextrous controls mean lefties and righties operate the gun identically, and the alloy grip module wrapped in G10 panels provides the secure, consistent purchase you need when it matters.
Capacity adapts to your needs: Sig ships the P211-GT4 with one 17-round and two 21-round steel magazines (or three 10-round compliant magazines in restricted states), and the removable low-profile magwell speeds reloads without compromising the lean profile that makes this gun concealable. A Romeo X electro-optic sight comes pre-installed and paired with XRAY3 day/night iron sights—redundancy you can trust. The Nitron finish on both slide and frame resists corrosion, and at 42.3 ounces loaded, the P211-GT4 sits right where a carry-ready 9mm should: light enough for all-day wear, substantial enough to shoot naturally.
This is a no-compromise compact 9mm for shooters who refuse to trade accuracy and control for concealability. Whether you're training on the line, preparing for duty, or carrying every day, the P211-GT4 delivers the precision engineering and purposeful ergonomics Sig has built its reputation on.
Key Features
- 4.2-inch target-crowned bull barrel for accuracy and predictable recoil
- Carry-length SIG-LOC PRO optic-ready slide compatible with modern red dots
- Romeo X electro-optic sight pre-installed, backed by XRAY3 day/night iron sights
- Fully ambidextrous controls for left- and right-handed shooters
- Aggressive duty-style slide serrations for confident manipulation
- Single-action only (SAO) trigger with skeletonized flat blade for clean breaks
- Stainless-steel frame and slide with Nitron finish for durability
- Full 1913 Picatinny accessory rail for tactical accessories
- G10 grip panels on alloy grip module for secure, consistent purchase
- Removable low-profile steel magwell for reload efficiency
- Includes one 17-round and two 21-round steel magazines (or three 10-round compliant mags)
Specifications
| Caliber | 9mm Luger |
| Barrel Length | 4.2 inches, bull barrel with target crown |
| Slide Finish | Nitron |
| Frame Finish | Nitron |
| Slide Material | Stainless Steel |
| Frame Material | Stainless Steel |
| Grip Module | Alloy with G10 grip panels (Black) |
| Trigger Type | Single Action Only (SAO), flat skeletonized |
| Sights | Romeo X (pre-installed) + XRAY3 day/night front and rear |
| Optic Ready | Yes, SIG-LOC PRO footprint |
| Accessory Rail | 1913 Picatinny (full-length) |
| Sight Radius | 5.8 inches |
| Overall Length | 7.6 inches |
| Overall Width | 1.48 inches |
| Height | 7.6 inches |
| Weight (with magazine) | 42.3 ounces |
| Magazine Capacity | 17-round or 21-round (P320-compatible steel) |
| Magazines Included | One 17-round and two 21-round steel (or three 10-round compliant) |
| Safety | Manual safety |
| FCU Material | Stainless Steel |
| Barrel Material | Carbon Steel |
| Threaded Barrel | No |
Frequently Asked Questions
Is the P211-GT4 optics-ready, and which red dots does it accept?
Yes—the carry-length SIG-LOC PRO optic-ready slide is milled for SIG-LOC PRO footprint red dots. A Romeo X sight comes pre-installed. The slide does not add the length of a full-size frame, keeping the gun compact for carry.
What magazines come with the P211-GT4, and are they common?
The P211-GT4 ships with P320-compatible steel magazines: one 17-round and two 21-round (in most states), or three 10-round compliant mags where required by law. The removable low-profile steel magwell improves reload speed without compromising concealment.
Is the P211-GT4 suitable for concealed carry?
The P211-GT4 is purpose-built as a carry gun. Its compact 7.6-inch overall length, 4.2-inch barrel, and 42.3-ounce weight make it well-suited for belt carry. Fully ambidextrous controls and the intuitive single-action trigger support fast, confident operation in defensive scenarios.
Does the P211-GT4 come with iron sights if I use the Romeo X optic?
Yes. XRAY3 day/night front and rear iron sights are installed alongside the pre-installed Romeo X electro-optic sight, giving you proven backup aiming if the optic fails.

