MDT HNT26 LOP spacer - a different solution

jxb

Private
Minuteman
Sep 3, 2024
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4
Oregon
Trying to judge how much interest there might be in a LOP spacer for the HNT26. This would be in the XTN interface between the action and buttstock.

As most folks familiar with them know, the LOP is quite short and adding their spacers at the shoulder end isn't optimal. If you add many you not only add the weight but you're moving away from the cheek rest. IMO it would be better to add a LOP spacer between the action and buttstock. MDT uses their XTN interface so a spacer would require a male/female tube with a bolt extension to accommodate the spacer. Yes this does mean the rifle while folded would be longer by the length of the spacer. There is no option to add the spacer behind the folder as it is epoxied in place at that end. My understanding from MDT is all variations of the HNT26 use the XTN interface so a spacer should fit any of the variations.

Given that factory LOP is 12.5" I'm thinking about spacers of 1" and/or 1.5". This would allow the user to do fine adjustments with the standard MDT LOP spacers if needed. My thoughts are keep it modular so a person can make add/remove as desired, just needing the wrench (ball-hex on folders).

I could of course get my local machinist to simply make one for me but I noticed lots of folks here and other sites wishing there was longer LOP or a better solution than the factory spacers. I talked to MDT about it and while they have no plans to make one, they appear to support a 3rd party project to make them. The issue now becomes is there enough interest to justify a small batch cnc order while keeping end user pricing similar to what we see for similar accessories.

If you might have interest in something like this please respond saying so and what length you'd prefer.
 
Seems the lack of feedback says it all. Glad I asked before doing a cnc run.

on a related note, my 3D guy is printing me one in each length in Carbon Fiber PLA so I can see how that works or simply use them as mock-ups. It's possible they will be strong enough using this stuff and of course light. I sourced Titanium threaded rod to keep that down and ordered round coupler in SS for now as still haven't found that in Titanium. The idea there keeping weight down and it's really no more costly than SS. I'll just keep a ball-hex in my tool bag and can change LOP to whatever is desired that day.

3D_female-end.jpg3D_male-end.jpg
 
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@BCSlayer @PappyM3 Sorry, I hadn't seen any interest so didn't check back until now. If you are on accurateshooter forum you can get me using same userid, been there a while. I only posted here because I saw lots of complaints about LOP here. That said I'll check back here to see any responses you leave.

If you're still interested in these I can get with my 3D guy and get a final version worked up. These above work fine but they are PLA CF and PLA may soften in direct sunlight if it were to get warm enough, like leaving your rifle sitting out in the sun for a while. So he was thinking about getting some PETG-CF and doing them in that. I'd love to do a CNC run but I don't see enough interest to justify the cost whereas 3D printed can be done on demand.

my thread over there. I think you can read it without account.

Here's a pic showing the parts plus the end of one of the threaded rod which is 3/16" hex same as the bolt in the folder. The other shows the 1" spacer installed and the 1.5" on the table. The next ones will improve on the fit replacing those flat corners with rounded to match the stock. A pic below shows what I'm talking about, flat vs rounded. We'd have added the XTN logo too, but the MDT files didn't include that.

HNT26_LOP_spacer_kit.jpginstalled_view.jpg fit_of_radius_endview.jpg
 
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Final product... Shown is 1" installed, 1.5" to the left with hardware. The 1" kit weighs 1.4oz (~40 grams)

HNT26_LOP_spacer_kit_800px.jpg HNT26_LOP_spacer_fit_480px.jpg

Thanks to MDT for their support making this project happen.
 
Final product... Shown is 1" installed, 1.5" to the left with hardware. The 1" kit weighs 1.4oz (~40 grams)

View attachment 8546589 View attachment 8546590

Thanks to MDT for their support making this project happen.
wow that looks super clean. How would I get in touch about some (1 inch I think). I use all 4 spacers currently. also which bolt are you using to remove the buttstock and add? a video or some pics would be helpful.
 
Apologies, I should have been more clear. If possible please see my post (below) and contact me there:

These have only been tested with the folder as I have one, not the non-folder. I believe they will work the same with the non-folder but without testing I can't say for sure.

HNT26 manual: https://support.mdttac.com/hc/en-us/articles/4414793757076-HNT26-Installation-manual
folder note: The manual says 7/32, but mine and another customer it is 3/16, ball-hex is required on the folder. If it won't loosen, then per MDT they use blue loctite, so try applying some heat to that thread area. Not so hot you can't touch it, just a little heat.

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