Apex Releases Curved Advanced Trigger for Sig Sauer P320

I’ll make a bold prediction here: The Sig Sauer P320 will supplant the M&P platform as the second most popular handgun in the market here within the next 5 years (in terms of units sold during a calendar year). While that gives the M&P a bit to stay #2 with its decade plus advance notice, there will be quite a few P320 handguns floating around (not including the Army’s handguns).

As such, it makes a whole lot of sense for Apex, known for the utterly fantastic set of upgrades on the M&P platform, to take a detailed dive into the P320 platform. As part of their expanding line of products, Apex is tackling the 320’s trigger with their new Curved Advanced Trigger. Per the name, the trigger is curved, but I appreciate that it has a wide flat face and not excessively contoured.

Without having to change a spring, the new Curved Advanced Trigger immediately drops the pull weight by 2 lbs. Completely drop-in, the Curved Advanced Trigger maintains all the factory safety values, so even with the lighter pull, the gun will not go bang without deliberate input. Installation requires no tools and works with all Sig P320 models including 9mm, .357 SIG, .40 S&W, and .45 ACP.

The new trigger is priced competitively at $49.95 MSRP. The trigger is in-stock now at various retailers for less than the MSRP.

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • Vhyrus

    The best part about the P320 is that you don’t have to improve the trigger because it’s already good. Stop trying to fix something that isn’t broken dammit!

    • ZuluHotel

      Completely agree. It’s so good right out of the box.

      • SGT Fish

        I will be the one to disagree. not saying its terrible or anything, but it just seems like nothing special. it almost feels like a 3 stage trigger with light take-up, then you get to where you think its about to break, and theres another 1/8th inch of travel before it breaks. It definitely is lighter and maybe smoother than my stock glock trigger, but the glock has predictable take-up and then breaks. The sig would win if it was crisper, plenty smooth though

        • FarmerB

          I find they vary a bit, at least when new – you can pick up a few side-by-side and they all feel somewhat different. Not sure that’s the case after a break-in.

    • USMC03Vet

      But I need muh aftermarket!

      Long gone are the days of settling for crap in the handgun world.

    • Holdfast_II

      Yeah, the p320 would be very low on the list of striker-fired pistols that need upgrades. Right above the PPQ.

      On a related note, does anyone else hate the actual trigger in the M&P? I have the 9mm Performance Center, and the trigger PULL is fine – I just hate the actual feel of the trigger itself – it pinches.

    • M1911

      People buy 1911s because the trigger is so good out of the box — far better than most every striker fired gun will ever be.

      But I still had a gunsmith perform a trigger job on all of 1911s. And I’ve improved the trigger on all of my Glocks. A better trigger helps me shoot more accurately.

  • Tim


    • No one

      Yes, because I can’t imagine how devastated I’d be if I lost my warranty on my $400 dollar gun.

  • Dr. Longfellow Buchenrad

    You see those pistols from Germany? Theyve got curved triggers. Curved. Triggers.

  • Just Say’n

    The 320’s trigger is really nice out of the box.

    I was going to complain about this post being an APEX commercial vs. a review but then I glanced to the right and notice APEX has ad space on here, so I’ll just shut up now.

    • Gary Kirk

      Same way we get a “Breaking!!” every time a new Strike Industries product is out.. Really starting to wonder if TFB doesn’t need a wash..

  • CA

    Can’t stand Apex as a company. They release $25 trigger replacement parts at the cost of $95. They take advantage of you, and the Apex parts that came with my M&P were rough, and they BARELY improved the trigger over stock. (Glad I didn’t have to pay for it)

  • adverse4

    NO, I do not want your news letter.

  • John

    Yes, I think when a large government contract is won by a gun company, the public thinks “THEY must by the best since they the government buys them!”

    I think it would a have been an awesome social experiment to pretend that Hi-Point won the contract and watch some YouTube gundits say “I KNEW IT! The Hi-Point is one of finest firearms out there, they just have bad marketing!”

    All jokes aside, the Sig is an awesome gun and I’m glad they won. However, the company does need to keep an eye on the quality control of their old flagship pistols such as the P226 which should NOT be left on the vine to wither. JMHO

  • Darhar M.

    I like my P320 just the way it is but thank you anyway.

  • iksnilol

    But… didn’t they like recently release a flat trigger?

  • anonymous

    Nyet! Pistol is fine!