BUDS – Backup Deck Sight for HOLOSUN SCS 320 Rear Sight

6 customer reviews




This patent pending design allows you to add a backup sight to your Holosun SCS 320 optic without adding an adapter plate or interfering with the optic mounting system.

Our BUDS sights will piggyback on the SCS 320 optic deck using a second screw that attaches into our specially designed optic mount screw.

What’s included:

  • Qty 2 – SCS-320 Screws
  • Qty 2 – SCS-320 Sight Screws
  • Qty 1 – SCS-320 Rear Sight (height of your choice)
  • Qty 1 – Thread Locker

Select your front sight height below and we will send you the right rear sight for your setup.

SKU: SCS320BUDS Categories: ,


SCS-320 Screws

  • Alloy steel SCM435
  • Heat treated to a strength grade 12.9
  • Black Oxide plated to deter rust and erosion
  • Torx T15 Drive (15inch/lbs)

SCS-320 Backup Sight

  • High impact polymer (metal version coming soon)
  • Available at several different sight heights

SCS-320 Sight Screw

  • Hex Socket 1.5 Drive
  • M1.6
  • Strength grade 12.9
  • Black Oxide coated
  • Alloy Steel

Note for Staccato users: to determine what size front sight you have Staccato has provided the following information. Also, Staccato users will want to order our rear sight plug.

Fiber Color: RED = Compact/Carry | GREEN = Full Size

The C2 and CS front sight heights are .140″ for compact or .265″ for the full size.

The P, XC, and XL only come with a .285″ full size sight.

Note for SIG Sauer P320 users:

M17/M18 front sight is #6


Additional information

Front Sight

Staccato CS/C2 .140", Staccato CS/C2 .265", Staccato P/XL/XC .285", SIG Suppressor Height .339, SIG Suppressor Height #6, SIG .215", SIG .374", SIG #8, CZ Shadow 2

Based on 6 reviews
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  1. 405xshot (verified owner)

    Installed easy , seems to be good quality. The correct sight work well with front . The irons were zeroed.

  2. Nate Johnson (verified owner)

    Easy install and quality product. Really works well on my Shadow 2 Compact and SCS320.

    Shipping was fast.

    My only complaint was that I never received tracking info.

  3. Cody (verified owner)

    First off I’ve got to say this company is amazing. They have great customer service and they respond really quick. Second they have created a great device that really helps all M18 users that have a holosun SCS 320.
    This product installs very easily. Feels very sturdy and looks great. I definitely recommend to anybody. FYI the best part is it doesn’t take up a lot of your fov on the Red Dot

  4. Matt Schubkegel (verified owner)

    Zero instructions included. All you get is a sticker on the outside of the bag with a torque spec for the screws. Have to go on the website to determine installation orientation. What I got looks like a 3D printed piece of plastic. It’s rough. Not nicely machined like the CAD drawing used on the website. It does the job, but I can’t say I’m proud to be bolting this onto a Staccato.

  5. Josh Maher (verified owner)

    Great little piece of gear. Works great. Saved me from having to get another rds for my staccato c2.

  6. Peter (verified owner)

    Install went well; product seems good, yet to test. Only wish there was a tritium option.

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