Safariland ALS Holster for Red Dot Glock

I read an article on military times a couple months ago about a Safariland ALS holster designed to accommodate Glocks with red dots mounted.  I had been wanting to try the ALS system after using the SLS roto-hood system for 10 years and compare the two for speed and ease of use.  So I ordered one direct from Safariland customer service and 4 weeks later it arrived.

Unfortunately, the Safariland 6354DO will not work out of the box with OST-TSD modified slides that have iron sights in line with the Trijicon RMRs.  It will only work with RMR mounted in the rear sight dove tail mount.  I think this is a major oversight on the part of Safariland.  Having the iron sights in line with the dot is what makes it practical as a carry/duty gun in the event the dot loses power or is broken.  The OST-TSD configured slides are also the most common as they offer both off the shelf ready to go slides and machining services for your Glock factory slides.  I would think that among serious users this configuration would be a lot more common than just dropping the dove tail mount in the rear of the slide.

Aside from those reasons, not making it work out of the box with the OST-TSD configured slide makes even less sense considering how minute the difference is to make it work.  I was able to modify the holster to work with my OST-TSD Glock 34 in about 10 minutes, this included determining what I needed to change on the holster.

In this picture below you can see that the retention mechanism sits back about 1/8″ too far to allow the OST-TSD slide to sit all the way into the holster:

I used a belt sander to remove about 1/8″ of material from the top of the retention device and cleaned up the edges with a razor blade.



I used a heat gun for about 20 seconds on the front of the holster to reshape it so the RMR could drop all the way in



It locks up like it should and cleanly releases.

If you’re used to using the ALS holster and want commonality of training, or your department/agency requires the ALS mechanism you can make the 6354DO work with your OST-TSD slide.

If you want something that works out of the box with your OST-TSD slide, your best option is to buy the Bladetech unit that OST is selling.

About SinistralRifleman

I've been competing in the action shooting sports since 2002. I believe competition shooting to be an excellent way to build gun handling and marksmanship skills and encourage all gun owners to seek out some form of competition shooting. Anyone can become reasonably good at it if they devote the time and resources to do so. Winning, while nice, need not be your goal; bettering yourself through the pursuit of excellence is something we all can achieve.
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18 Responses to Safariland ALS Holster for Red Dot Glock

  1. Chris Bartsch says:

    I have sent 3 emails to Safariland customer service and have not received a reply from them. Can you post the email address or phone number you called please.

    Also, is safariland only making this holster in multicam or will they make it in black also?

    • I just used the customer service line on the Safariland website.

      • The Safariland 6354DO is designed to work with the RMR milled into the slide with the rear sight mounted in front of the RMR, not behind the RMR. Your red dot sits too far forward. We will be coming out with the second generation at SHOT. It will have a hood that totally covers the red dot to protect it from dirt and water. The hood opens automatically when the gun is drawn. Tommy Campbell, Safariland

      • Tommy,

        That is good to hear. Environmental factors filling the lens with debris is the only real downside to the system. I’ll have to order one when it is available.

    • Safariland can make the holster covered in black cordura as well as tan and green.

  2. Jay says:

    Thanks for your tip, I had to make the same adjustment to my 6354DO to work right with Glock 17 with a Trijicon RMR.

  3. Brian says:

    Tommy, I have a few questions for you on the 6354DO. When will the 2nd gen. be availible? Will the 2nd gen. allow the rear sight to be mounted behind the RMR? You said you were able to cover the holster in black cordura. This currently is not shown on your website. WIll this only be second gen.? Thanks!

  4. Robert says:

    Thanks for sharing the 6354DO modification for the Trijicon RMR. I’ll be doing this to my holster.

  5. Pingback: Chuckwulla Holster by We Plead the 2nd | SinistralRifleman

  6. Tommy Campbell says:

    The 3rd generation Safariland ALS red dot holster is now available for the Glock MOS pistols. It is a light mounted holster with a dust cover (removable) that opens automatically when the Hood is opened. It is available in retention levels 1, 2, 3 and 4. Levels 1 and 2 do not have the SLS Hood. For these versions the red dot will open the dust cover. The following popular Glock models are available, Glock 19, 23, 17, 22, 31, 34, 35 and 41. The Glock 34/35 version also fits the Glock 41. It will fit most red dot sights but the scope must be mounted into the slide like the MOS Glocks are. It will fit no matter where you mounted the rear sight. It will also function with or without the light or red dot. This means you can also use it for a non light stock Glock. It can be made it most any finish to now include tan.
    The S&W Core version will be released at the end of August with the Sig 320 version to follow that.

    Tommy Campbell, Safariland

  7. Tommy Campbell says:

    You must have an older holster. You did not list the date code of the holster located on the back of the holster body. Safariland has a reputation of continually modifying its designs as the market progresses. We recently modified the ALS lock to fit additional red dot sights and higher front sights. Newly manufactured holsters will fit a broader range of red dot sights and higher front sights.

    Tommy Campbell Safariland.

    • Tommy,

      This article is from 2012, and we already discussed this all in the comments back then.

      If Safariland wants to send me a new holster for a new article, e-mail me at Otherwise my old modified holster still works.


      • Campbell, Tommy says:

        Sorry! I didn’t see how out dated the article was. Yes I can send you the current design RDS holster. We are in the middle of totally redesigning the holster and will show it at the 2020 Shot Show. Let me know what gun and holster variation you want and I will order it for you.

        Sent from my iPhone – Tommy Campbell, Safariland and Bianchi National Technical Specialist – 2330 Barton Lane, Clearwater, FL 33759 413-530-1950

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