SHOT Show New Guns: Sig P320 Review

SHOT Show New Guns: Sig P320 Review
The SIG P320 in full-size configuration.

SIG P230
The SIG P320 in full-size configuration.

Unveiled at SHOT Show 2014, the Sig P320's hammer-less, striker-fired design is out of character for Sig, but what's really remarkable is you basically get two handguns in one, thanks to interchangeability from a full-sized service pistol to a shorter-barreled compact concealed carry gun.

Sig's P320 pistol is clearly being marketed to police and military agencies but methinks the gun will be a hit with us plain-Jane non-police concealed carriers as well.

The Sig P320 Carry.
The Sig P320 Carry.

Now, the gun is interesting for Sig because it's the company's first-ever striker-fired handgun. But more remarkable is how modular this thing is: You can swap between three different grip sizes to fit your hand, and you can change slide and barrel lengths—converting it from a full-size to a compact carry version and vice versa. It's like the Clark Kent of guns.

The full-size configuration has a 4.7″ barrel with an 8-inch overall length. By comparison, it's a wee bit longer than a Glock 17 Gen 4 when compared to the Glock's 4.48-inch barrel and 7.95-inch overall length. The P320 Carry has a tuckable 3.9-inch barrel and is just 7.2 inches in length.

In his recent blog post, Sig Introduces the P320, Massad Ayoob points out that American handgunners didn't do cartwheels over interchangeable barrels in original Dan Wesson revolvers (excellent wheelguns in their own right) and may not do so over this feature in the Sig. It's an interesting point.

However, for a cop needing a full-sized duty pistol part of the time and a concealed carry rig for off-duty or undercover work, the option makes sense. I suppose one could envision someone needing a gun to cover both concealed carry and open carry situations where the goofy laws demand such. Then again, with an MSRP of $713.00 the value added is hard to miss.

The Sig P320 is presently available in popular calibers ranging from 9mm, .357 SIG and .40 S&W (.45 ACP coming soon); in full-size mode you get 17 rounds of 9mm (14 rounds of .357SIG and .40S&W) while the Carry configuration holds 15 9mm rounds (13 in .357SIG and .40S&W).

The insides are P250 DNA, and the gun has an impressive number of built-in safety mechanisms (and options). For instance, in addition to internal safeties like a striker safety requiring trigger pull and a disconnect safety that prevents the gun from firing out of battery, the mag needs to be out for the gun to be disassembled. The slide must be locked to the rear and disassembly is done without any tools or having to pull the trigger.

Note that the gun is not trying to be a Glock: it's frame is a stout stainless steel rather than polymer. The full-size gun tips the scales at 29.4 ounces while the smaller P320 Carry weighs 26.9 ounces.

I like the fact that the gun comes with the excellent Siglite night sights. It's one less thing I have to tinker with.

In terms of operation, Sig lists the trigger pull at 5.5 lbs and, by the way, you can get an optional “tabbed” Glock-like trigger if you so desire. Its ambidextrous slide release is pretty swell, too.

Time will tell how the market responds to the P320. But if the success of other Sigs (like the P250) is any indication I'd expect handgunners—be they police, military or armed citizens—to give it a very warm reception.

What do you think? Sign in and leave a comment below.

Recommended Handgun Resources

Massad Ayoob's Greatest Handguns of the World, Vol. IIMassad Ayoob's Greatest Handguns of the World Vol. II

Massad Ayoob's Greatest Handguns of the World Vol. I

Gun Digest Shooter's Guide to Handgun Marksmanship

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  1. This is what you stated in your review- “Note that the gun is not trying to be a Glock: it’s frame is a stout stainless steel rather than polymer.” But in your attached video produced by Sig, the first thing they state is that its a polymer gun. How do you do a review on a gun that you’ve never even had in your hand…. Really????

  2. Great review! Thank you for this informative review for this will be helpful and useful to those who are planning to purchase this P320 and I’m one of them. Been reading reviews regarding this P320 and yours is one of the best. 🙂

  3. Few people even bother to understand how a handgun works. What they cannot see they do not fear. This gun is a single action with no manual safety and what is really moronic and ignorant is that it comes without a trigger safety in one of its models. Wow are they going to get sued over this design when someone accidentally gets shot.

    Striker fired guns also have far less ignition reliability. If you do not believe me take an empty case and put only a primer in it but seat it high. If you attempt to fire it out of a Glock or Walther striker fired gun it will misfire every time but if you conduct the exact same test with the bone crushing blow of a hammer fired gun it will not only drive the primer into the pocket but still have enough energy to crush the primer flat and fire it off.

    Also turn the average striker slide upside down and look underneath it. Most have an open slot that is exposed to the entry of dirt, power, oil and excess grease which can result in the striker channel filling up with contaminants and causing a misfire especially in extremely cold weather. Hammer fired guns rarely have such wide open entries into the firing pin channel.

  4. I had a P250 and didn’t like it very much. Interchangeable calibers are great, put when going up from 9mm to .40 S&W my particular gun had some adjustment problems. So while it sounds great on paper, it was not so in practice. On a couple of occasions I would pull the trigger but the changeable fire control mechanism failed to fire the round. Not good for personal defense. Plus, when I went to sell my P250, I almost had to give it away, no resale value. I hop Sig’s P320 works better than that.

    • How many rounds did you put through it? Did you clean it properly? I have never had a FTF with my P250 and I have well over 1,000 rds shot through different configurations. Was it your ammo or your magazines?


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