SIG P320 Modular Handgun System

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SIG has a solid reputation when it comes to handguns and their P320 is yet another example of their ability to design and manufacture reliable, accurate handguns. The P320 is a polymer-framed pistol with a modular grip frame. It was designed with the help of experienced law enforcement officers and is being billed by SIG as the most “operator-safety focused striker duty pistol” currently on the market.

At SIG’s special range event the Monday of SHOT week there were quite a few P320s available to shoot. It proved itself to be a reliable, accurate pistol at various ranges. Admittedly this is something that can be said of many of SIG’s guns.

The full-sized pistol comes chambered in 9mm, .357 SIG, .40 S&W and .45 ACP. It’s a striker-fired DAO and has a nice, crisp trigger. The trigger pull is between 5.5 and 7.5 lbs depending on caliber. It comes with SIGLITE Night Sights and a Nitron slide finish. One of the features it’s promoted for is its quick, straightforward take-down which can be accomplished without any tools or trigger manipulation. MSRP varies between $628 and $713.

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Description from SIG:

Unlike any other pistol in its class, the P320 features a unique 5-point safety system, standard on all models:

– Striker Safety
– Disconnect Safety
– 3-point Take Down Safety System
– Takedown is prohibited without removal of magazine
– System prohibits takedown without slide locked to the rear
– Rotation of takedown lever allows disassembly without tools or trigger manipulation.

The unique modular design of the P320 offers the user the ultimate in flexibility to change calibers, sizes, and fit. Small, medium, and large complete polymer grip modules ensure comfortable and optimal fit for the widest range of hand sizes.

Specifications are subject to change.

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katie.ainsworth

Katie is an avid shooter, hunter, military journalist, and Southern girl. Firearms are her passion whether at the range or on a spot-and-stalk after a big buck. She’s a staff writer at The Firearm Blog and writes about guns, hunting, and the military for various publications both online and in print such as Outdoor Life, Handguns, and Shooting Illustrated. Shoot her a message at ainsworth.kat@usa.com


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  • JumpIf NotZero

    Nice ad for SIG? How about something actually related to the MHS version?

  • Phillip Shen

    Did they ever fix the incompatibility between 9/40/357 Sig and 45 acp?

    • JumpIf NotZero

      No, and that’s really the craziest thing! To have a chassis/modular gun that still has issues switching from 9/40 to 45.

      The 45 trigger group is wider and won’t fit in the 9mm frames. The 9mm frame MAY fit, but might not be correct in the 45 frame.

      Bonehead move Sig.

      • nova3930

        Ive seen a couple different places that per SIG there was some geometry issue that as unanticipated in trying to adapt 45 to a 9mm frame. Supposedly there was a fix in the works but the last mention I saw of it was from mid last year.
        It has crossed my mind that an adapter to put a 9mm trigger pack in a 45 frame might be doable though.

  • Meh

    It’s a neat firearm, but the conversion kits cost almost as much as a new gun.

    • powerwiz

      I own the Compact Carry version and love it. I agree the conversion kits are stupidly priced. I doubt many consumers will do it.

      • Hensley Beuron Garlington

        Same here, I have the Carry model and don’t plan on getting a conversion kit. I’ll just buy more in different sizes and calibers and have lots of parts to interchange if things start failing.

    • Sianmink

      I have a feeling it might be aimed more squarely at European markets, where you may only be allowed the privilege of owning one or two guns.
      Conversion kits are gold out there.

    • Jwedel1231

      I would assume that the slide & barrel and spring are the majority of the cost of the firearm in the first place, which kinda negates the advantage of the modularity.

      • HSR47

        This.

        They sell the plastic grip module for 46 bucks, and that’s probably at least ~90% profit. The rest of the cost is in the upper, with a portion in the frame/receiver.

  • meow

    How about the 250’s .22 conversion. Anything like that for the 320? While I’m talking about it, Why was that such a big announcement for sig? All their guns have conversion kits just about.

    • KK

      I believe the 22 conversion works in the 320 as well.

      • Dave D

        No go for the P250 conversion on a P320. P250 conversion only works with the traditionally hammered P250. Don’t have a P320 striker 22LR yet. I’d be interested in one if the price is right.

  • dave

    Hey katie, what’s the word on that romeo1 optic? Do the 320’s come milled from the factory to accept them?

  • nova3930

    My LGS had a “used” FS with NS for stupid cheap a couple months ago. Bought it, shot it and liked it well enough I went back and bought a compact to go with it. Plan on adding a SC frame to replace my Shield. 4 more rounds for minimal size increase….

  • Jason Smith

    I don’t understand the point of this post. The P320 has been around for a while now. You don’t mention anything about the gun that is NEW. Basically just stating that it exists and is on display at shot show, along with some uncaptioned photos. Like another JumpIf NotZero said, is this just an ad for a not-new gun?