BOTW: Mk 24 Combat Assault Pistol-style Clone and First Set Winner

Tom R
by Tom R

Drumroll…..And the winner was Tony R with his BOTW: 300BLK PDW. The randomly picked winner voter was Jordan W. Tony will receive a gift card to Brownells and Jordan will get a small amount of swag. It pays to play… 😉


Fifth Installment of Build of the Week was contributed by Steve. A straightforward build–it sounds like the biggest challenge was sourcing the holster…

Keep the submissions coming in!

You can submit your own build at https://www.thefirearmblog.com/blog/build-of-the-week-submission/


HK45C Tactical – built-up as a Mk 24 Combat Assault Pistol-style clone.

Crimson Trace Defense IR Laser (LGD-645)
Decocker only H&K conversion
AAC Ti-Rant 45S Suppressor
LBT Mk24 Holster (accommodates laser guard and suppressor, mounted or not)

The holster wasn’t particularly fun to source as they don’t pop up for sale often. I ended up running an LBT group buy through a popular H&K forum as LBT will make you just about anything if you fill a minimum order quantity!


Comment below to ask Steve questions about his build.

Tom R
Tom R

Tom is a former Navy Corpsman that spent some time bumbling around the deserts of Iraq with a Marine Recon unit, kicking in tent flaps and harassing sheep. Prior to that he was a paramedic somewhere in DFW, also doing some Executive Protection work between shifts. Now that those exciting days are behind him, he teaches wilderness medicine and runs an on-demand medical staffing business. He hopes that his posts will help you find solid gear that will survive whatever you can throw at it--he is known (in certain circles) for his curse...ahem, ability...to find the breaking point of anything.You can reach him at tom.r AT thefirearmblog.com or at https://thomasrader.com

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  • Steve Steve on Jul 20, 2018

    Since there's already a few notes below about this not being a build, I'll add a few notes:

    -Internal parts that move against each other during a trigger pull have been polished.

    -Factory match trigger springs have been added (I think there are 3, but it's been a few years since I fitted them).

    -Hammer spring was cut to achieve desired pull - I bought a bag of HK match hammer springs, cut them down to different lengths (coil-by-coil), and did pull gauge and live fire testing over on a the HK forum.

    -Crimson Trace Defense IR Laser (LGD-645) is a fairly difficult part to obtain - this is the IR version of the civilian red laser LG-645; it is a contract overrun, serialized, and the only way I was able to purchase it was by walking into Crimson Trace's HQ and asking to buy one after my attempts over the phone failed. It is legal to own as it is not above the power limit for IR lasers, but I believe it was simply company policy at CT (prior to the S&W buy-out) that they didn't sell them to civilians. There aren't a ton of them out there!

    -For a while it wore a set of Heinie tall sights, but I went back to the original parts; the tall sights made holsters a little iffy - this is my carry gun with a smaller 8 rd. magazine, leather Mitch Rosen holster (designed specifically for CT to fit the LG-645/LGD-645), and obviously, no can. I also have a LG-645 red laser that it wears on a daily basis - the LGD-645 was installed just for the photoshoot and clone-correctness!

    So it doesn't have a huge parts list but is it a build? Well, I customized it exactly how I wanted it so I'd say I built it into my pistol. Your might have a different opinion, and that's totally fine as well! Much like my Ruger that was posted 4 weeks back, I like to keep it simple and functional.

    • Steve Steve on Jul 20, 2018

      @Steve And a slight correction to the post above - "A straightforward build–it sounds like the biggest challenge was sourcing the holster…".

      The biggest challenge was, by far, installing the HK match trigger spring without the special (i.e. overpriced) tools. A close second and third were the LBT group buy and IR laser sourcing.

  • Bkksw Bkksw on Jul 21, 2018

    I never took "build" of the week to mean the gun must be built from scratch.. but some clarification would be helpful. "Configuration" of the week or "assembly" of the week would probably be more accurate for most of what we've seen so far. I mean, how many here have the ability to actually build a gun? Or evaluate it if they could..

    Would 1911;s built from "in the white" parts be a build? Or more "assembly" since many if the parts were purchased. Or does "fitted" qualify. On my .224 Valkyrie build.. half the parts were "fitted" in some way. Is that a build? Not nearly as much as the 1911's or bolt actions I build.. but who wants to see yet another 1911..

    Look, we know calling something an assault weapon doesn't mean it's really an assault weapon. Right? So either is a build of the week a build. Relax..

    (not sure what's up with the photoshop build..)

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