Holosun’s New K Series Red Dot At SHOT Show 2020 (Video)

While out at SHOT Show 2020, we ran into some pretty exciting new products in the concealed carry market. One of those new products is the micro red dot from Holosun.

This new “K” series red dot is meant to fit on your micro compact pistols with a slide cut like the SIG P365XL and a few others. This red dot mounts up directly on the 365XL, but some modifications are required for other guns, like the Springfield Armory Hellcat.

The 507K is a multi-reticle version, while the 407K is just a dot. The housing is aluminum for added strength and these optics are completely waterproof, per the rep.

Something else that's pretty sweet is that, while SIG removed the possibility of keeping the rear sight, Holosun incorporated it into the back of the dot's housing, so if you're in a SHTF scenario and something happens to your dot you've still got your co-witnessed sights you can rely on.

Perhaps the most impressive aspect about this entire thing is the affordable price point on these two red dot optics. The 407K is 230 at the store, while the 507K is 290 at your store.

According to the rep you get at least 20,000 hours on the battery, which is a long time.

You can learn more about this red dot, and watch Riley's interview, here:

Leave your thoughts on this in the comments below. Are you in the market for a red dot? This might be the one for you.

About Joshua Gillem

Josh is a lifelong practitioner and student of the gun. He grew up shooting/hunting with his dad, and was given his first gun, a 12 gauge shotgun, when just a small boy. After high school, he joined the Marines where his love for firearms blossomed as he qualified with an M16A2, an M9, and a 240G. Josh has been writing about firearms and tactics for several years, owns the blog Gunners Den, is a staunch supporter of the Second Amendment, and believes that each individual person has the right to self-defense by any means necessary. Currently residing in gun-friendly NC, he carries a concealed gun on a daily basis, even in his own house.


  1. Levi on February 3, 2020 at 10:57 am

    Do you have any red dot sites that are compatible with the taurus g3?

  2. DANIEL MALDONADO on February 7, 2020 at 2:49 pm

    Who do recommend for modification so your 507K will fit on my Springfield Hellcat OSP?

    • charzard on April 13, 2020 at 11:18 pm

      No modification required I believe. Fits my p365xl also.

  3. Donn Sottolano on February 12, 2020 at 6:30 pm

    Does the Holosun 407K fit flush on a Glock 43/48

    • Milan Stimatz on July 22, 2020 at 12:44 am

      No it will leave just a tad bit of both sides.

  4. Mike Wooten on April 30, 2020 at 9:20 am

    will the 407k fit my canik tp9 sc elite?

  5. John Sorace on June 4, 2020 at 3:28 pm

    Will the 407K mount on my regular P365?

  6. Sergiu Arsenie on July 7, 2020 at 3:14 pm

    John, yes it will, with modifications. Check Jagerworks, they offer this service.

  7. Mike Welch on November 2, 2020 at 12:29 pm

    I’d like to know who cut the slide. I got my slide cut but the built in irons on the 507k do not line up on the P365. The whole idea was not to have to use suppressor height sights. I can’t find anyone that will cut the P365 to the same depth as the P365XL.

    • Paul S Rampon on February 16, 2021 at 9:40 am

      Have you found anyone to cut the 365 slide so that it will co-witness with the 407K?
      Thank you,,,Paul

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