Description
The Sig Sauer P320 XFull 17 Round is the duty-length P320 with the XSeries grip module that most owners end up buying anyway. MAG5 Firearms stocks it with a 4.7-inch barrel, a factory optic cut, a beavertail frame with a Picatinny rail and seventeen rounds on board, in the size that is simply easiest to shoot well.
Why Full Size Is Easier to Shoot
A 4.7-inch slide gives a longer sight radius, more reciprocating mass to absorb recoil and a grip that fits an entire hand. Every one of those things reduces the error a shooter contributes, which is why new shooters progress faster on full-size guns than on subcompacts.
For a nightstand pistol, a range gun or a duty holster, none of the reasons to carry something smaller apply. The Sig Sauer P320 XFull 17 Round gives more pistol for the same money than the compact does.
The Sig Sauer P320 XFull 17 Round XSeries Grip Module
The XCarry medium module brings a flat trigger and a more aggressive texture than the standard P320 grip, plus a beavertail that lets the hand sit higher over an already low bore axis.
Those are the first two upgrades most P320 owners make. Buying the Sig Sauer P320 XFull 17 Round skips both, and it skips the aftermarket trigger that usually follows them.
Sig Sauer P320 XFull 17 Round Specifications
| Manufacturer | SIG SAUER |
|---|---|
| Model | P320 XFull |
| Part Number | 320XF9BXR3PR2 |
| Caliber | 9mm Luger |
| Capacity | 17+1 Rounds |
| Barrel Length | 4.7 inches |
| Barrel Material | Black Carbon Steel |
| Slide | Black Nitron Stainless, Optic Ready, Serrated |
| Frame | Black Stainless with Beavertail and Picatinny Rail |
| Grip Module | XCarry Medium Polymer |
| Action | Striker Fired |
| UPC | 798681663644 |

Sig Sauer P320 XFull 17 Round Optic Cut and Light Mounting
The slide arrives cut for a red dot, so an optic mounts with no milling and no gunsmith appointment. On a full-size pistol with a long sight radius, a dot turns a gun that already shoots well into one that shoots precisely at distance.
A Picatinny rail under the dust cover accepts a weapon light, which matters more for a home defense role than any other single feature on the gun.
Capacity and Magazines
Seventeen rounds is duty capacity, and P320 magazines are among the most widely produced pistol magazines in the country. Spares are inexpensive and consistently in stock.
Twenty-one-round magazines from the M17 family drop in as well, so the Sig Sauer P320 XFull 17 Round can carry more than it ships with wherever local law permits.
Modularity and Transfer
The serialized part is the fire control unit, not the frame or the slide. That means this pistol can become a compact or a carry gun later by swapping the grip module and slide, with no second FFL transfer.
MAG5 Firearms is a licensed FFL dealer in Pennsylvania. This pistol ships new in the factory case with magazines, lock and documentation, transferred through your local FFL.
Other Sig Sauer P320 XFull 17 Round configurations and full-size duty pistols are listed in our handgun catalog. Factory specifications are published by SIG SAUER.
Every Sig Sauer P320 XFull 17 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 XFull 17 Round is a regulated firearm and we verify licensing before any order leaves the shop.





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