SIG Sauer P320 X-Full 9mm 4.7in XRay3, 2x17rd
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About this product
What is the SIG Sauer P320 X-Full 9mm 4.7in XRay3, 2x17rd?
The SIG Sauer P320 X-Full is a duty-ready, optics-capable 9mm pistol built on SIG's modular chassis system, delivering a full-size 8.2-inch platform designed for consistent engagement at practical shooting distances. It represents the evolution of the U.S. Army's M17/M18 service pistol into a civilian-legal configuration that prioritizes both mechanical reliability and operator-customizable ergonomics. This specific X-Full model ships with the high-visibility X-Ray3 day/night sight system and includes two 17-round magazines, establishing it as a complete package out of the box.
What is the SIG Sauer P320 X-Full used for?
The P320 X-Full is engineered for practical defensive shooting, competitive USPSA Production/CO division use, and extended-duration range training. Its 4.7-inch barrel and full-size grip module provide a stable shooting platform that mitigates muzzle flip, directly translating to faster, more accurate follow-up shots. The optic-ready slide, forward-accessory rail, and generous 17+1 capacity make it particularly effective as a home defense handgun or the primary weapon in a structured handgun course where round count matters more than concealment.
How does the SIG Sauer P320 X-Full compare to the Stevens 334 Rifle?
The P320 X-Full is superior for close-quarters defense and dynamic movement, while the Stevens 334 Rifle in .308 Win dominates at precision distance shooting. A handgun like the X-Full offers immediate maneuverability in confined spaces and a typical effective range of 25-50 yards, whereas the Stevens 334's 20-inch barrel pushes a .308 Winchester round with accuracy out to 300+ yards. For a home defense scenario under 25 yards, the 9mm handgun's capacity and point-ability are more practical; for securing a perimeter or hunting, the rifle's terminal ballistics are non-negotiable.
What does it weigh and what are the dimensions?
Unloaded, the P320 X-Full weighs a tangible 29.4 ounces and measures 8.2 inches in overall length, with a slide width of 1.3 inches. The 4.7-inch carbon steel barrel contributes to its neutral balance point, and the XSeries polymer grip module adds minimal weight while providing a 5.6-inch vertical grip circumference. This specific weight distribution—heavy in the slide and barrel, light in the frame—makes the 29.4-ounce pistol feel more stable during rapid fire than a compact like the SIG P365XL, which weighs nearly 10 ounces less.
Who is this NOT for?
This pistol is a poor choice for a first-time buyer seeking a basic plinker or someone whose primary need is deep concealment. The full-size frame and 8.2-inch length make appendix or inside-the-waistband carry impractical for most body types without significant holster investment and clothing adaptation. If your sole purpose is inexpensive target shooting at a static range, the cost of 9mm ammunition for its 17-round magazines adds up quickly compared to a .22LR pistol; consider a dedicated .22 trainer instead.
What's in the box?
You receive the complete pistol with the slide locked to the rear on a polymer chassis, two steel 17-round magazines, an optic-ready rear sight plate compatible with the DeltaPoint Pro and Romeo1PRO footprints, a standard rear sight plate, a chamber flag, and SIG's owner's manual with warranty card. Notably absent is any form of lockable hard case; the pistol ships in a cardboard box, which is industry-standard for this price point but requires you to supply your own secure storage solution, a non-negotiable requirement for any responsible owner.
Is the SIG Sauer P320 X-Full worth it at $744.99?
At $744.99, the P320 X-Full delivers significant value for a shooter who will utilize its optics-ready system and high-capacity magazines immediately. This price positions it about $150 below a comparable FN 509 Tactical but provides a more modular, aftermarket-supported platform. The inclusion of two magazines (a $70 value) and the X-Ray3 sights (a $120 upgrade on a base model) means you're paying effectively $555 for the core pistol, which is competitive for a U.S.-made, duty-proven system. If you plan to immediately mount a red dot and use it in training or competition, the value proposition is clear; if you'll leave it stock, a standard P320 Full-Size may save you $100 without a significant performance drop.
Specs at a glance
Pros & cons
What works
- Optics-ready slide cut for DeltaPoint Pro/Romeo1PRO — saves a $150+ milling fee
- Includes two 17-round steel magazines — a $70 value over single-magazine packages
- X-Ray3 sights provide a bright, 3-dot day/night sight picture with no batteries
- Full-size 8.2-inch platform reduces perceived recoil by 15-20% vs. a compact
Trade-offs
- Non-threaded 4.7-inch barrel — adding suppressor capability requires a $150+ aftermarket barrel
- Ships in cardboard only — no lockable hard case, requiring immediate separate storage purchase
- Aggressive XSeries grip texturing may irritate skin during extended IWB carry without an undershirt
Key attributes
| upc | 798681663644 |
| manufacturer | SIG SAUER |
| manufacturer part number | 320XF-9-BXR3P-R2 |
| action | Striker Fired |
| atf type | Pistol |
| barrel length | 4.7" |
| caliber/gauge | 9mm |
| capacity | 17 + 1 |
| color | Black |
| length | 13.5 |
| magazine included | 2 x 17-Round |
| model | P320 |
| number of magazines | 2 17 rd. Steel |
| package height | 3.0 |
| package width | 9.8 |
| product type | Semi-Auto Pistol |
| safety | Manual Safety |
| shipping weight | 3.6 |
| sights | Fixed Sights |
| sights type | Fixed Sights |
| slide description | Optic Ready/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (or) | NO SALE TO OREGON |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is it compatible with a suppressor?
- The factory 4.7-inch barrel is not threaded, so it is not suppressor-ready out of the box. You must purchase a separate threaded barrel, like SIG's own P320 Threaded Barrel (Part #PB320-9-B-TB), which adds a 1/2x28 thread pitch. Expect to spend an additional $150-$200 for a quality threaded barrel before you can mount a 9mm pistol suppressor.
- Does it fit a holster made for a standard P320 Full-Size?
- Yes, the P320 X-Full shares the same optic-ready slide profile and dust cover rail length as the standard Full-Size model, so it will fit most duty or competition holsters designed for that frame. However, some tightly molded kydex holsters for the base model may not accommodate the slightly more aggressive texturing on the XSeries grip module without minor heat-gun adjustment.
- How long does shipping take?
- All firearms ship within 2 business days after your FFL's information is verified and cleared. Transit time via UPS or FedEx is typically 3-5 business days to your selected licensed dealer. The entire process, from order to dealer notification, usually completes within 7-10 business days, barring any state-specific regulatory holds.
- Can I return it if there's a mechanical issue?
- Ironclad Armory does not accept returns on functional firearms due to federal regulations. If you experience a mechanical failure, SIG Sauer provides a one-year warranty from the date of purchase. You must contact SIG's customer service for a Return Authorization, and they will instruct you to ship the firearm directly to their New Hampshire facility for inspection and repair, a process that typically takes 3-4 weeks.
- Does this work with a Streamlight TLR-1 HL?
- Yes, the integrated M1913 Picatinny rail on the dust cover is fully compatible with the Streamlight TLR-1 HL and most other standard pistol weapon lights. The rail provides a solid 1.5-inch mounting surface, and the trigger guard geometry does not interfere with the light's clamping mechanism. Ensure you use the correct rail key (usually the Glock/SIG key included with the light) for a secure fit.