LRI's New UL Varminter optic mount for rifle stocks.

LongRifles Inc.

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I try to avoid bringing a trinket to market solely for the purpose of complicating someones purchasing decision. Rarely am I guilty of an original thought, so often the stuff I do is an attempt to improve upon an existing design.

The Badger EFR mount does a number of things very well. The limitation of the part is that outside the intended application, it's basically unusable. Tactical rifles are great and a lot of fun. So is killing critters that need killing. Feral piggys and mangey coyotes likely occupy the top of that list.

So with that comes the target audience for what our EFR mount is for. Folks desiring a lighter weight gun in a slimmer package, yet still fitted with the option of being able to run at night with peripheral optics. That problem statement opened Pandora's box as it brought a number of other things to the table that I've wanted to change.

Before going into this, one has to understand the original intent of the Badger EFR mount. My recollection is that the piece came about for military applications. The military is a shining example of simplification and delegation. In the Marine Corps one form of this is known as the "echelon levels of repair/maintenance."

Take a basic rifle for instance. 1st echelon repair/maintenance is at the operator level. Keep it clean, oiled, and free of corrosion. If something is lost or it breaks, report it. This tier level increases to where a guy is making components from raw materials. (there is a point to this, I promise)


In the case of an XM3 or M-whatever, the operator is unlikely to be peeling barreled actions from stocks as that would be a violation of the repair echelon. That chore is generally reserved for armorer's, 2112's etc. So, when you look at the original EFR mount, the 6 little screws holding it together were a non issue. Everything pretty much stayed together.

Now, fast forward to today. If your rifle has one of these, at some point someone (other than myself) has likely uttered a couple expletives when confronted with busting the top half off one these things. Do it for a living and it soon becomes a chore you'll associate as an itch on the top of your foot, while wearing tightly laced boots, and standing an inspection in the August sun somewhere humid.

-it just sucks...

So, that was the first problem I set out to solve.

Because I get to make stuff however I want, our new UL EFR for Varmint hunting is tailored for narrower gun stocks and features a hinge mechanism that retains the entire unit in the rifle stock. One removes two screws, tips the top half up/away, and the barreled action will peel right out.

Because I know someone will ask: What about the hinge and what about recoil?

I confronted this challenge two ways. I doubled up on the recoil lugs present in the base piece. Next, I machined the hinge assembly so that it pinches on itself as you button it down with the screws. The pin becomes "loaded" so that the joint is locked. -Last thing I wanna be on the hook for is someone "Peter Panning" their expensive optic out of a tree stand after a shot.

With a lighter platform being the objective, we kept the barrel contour provision constrained to a Remington Varmint profile. The ID of the bore is 1.050". Additionally, strategic use of an endmill was employed to remove weight wherever feasible.

Bedding the unit in the rifle stock is pretty easy and the lattice work on the bottom promotes good adhesion combined with mechanical bonds once the resin system cures. The pockets on the bottom are dovetailed to capture the epoxy. At only 1.375" wide, it's much easier to graft it into a narrower forend.

We make these on our new 5 axis machine. It's nice because it offers the powerful tool of work holding consolidation. We can present the part to the spindle a number of different ways in a single setup. Doing so mitigates the risk of errors from switching it from one vise to another.

The STENAG rail geometry is gauged and qualified. That tool is awesome, takes all the guess work out.

Weight 3.4oz minus the two screws. (those arrive tomorrow) Overall dimensions are 5" x 1.375" x 1.680".

Hope you like it.

C.


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missed

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I like it. I'll be ordering one soon. I need a EFR for my T4a. I kept putting it off.
 

Crazy1323

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Looks awesome, any idea on price for install and cerakoting the EFR?

also, what is the max barrel contour that these will fit? Will a M24 contour fit?
 

Mach1pilot

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Barrel diameter should be less than 1.050 inches from an early email from them... My stock is there waiting to have one put in...
 

DownRangeThermal

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Are you building them with any built in cant? Since most action rails are 20moa that would be an important option. One of the great things about my JAllen (rip) is that they made the forward NV rail 20 moa to match the majority of custom SA actions. Some clip on optics are known to have a vertical poa shift when an angular discrepancy is introduced.
 
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Just Macca

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Hi Chad,

Love the EFR, very nice. I had a question which may be better served by email, but it may be of interest to others.

I wanted to know if this could be adapted for a Blaser R8? The R8 professional success has a removable forearm tip.B6DFA9AE-1A2F-42AA-9740-C7C03228ECBD.jpeg6A803CE3-9273-4ED5-BC0F-37D6A04F298E.jpeg

I’m interested in the EFR less as a night vision attachment and more for a Phoenix/Fortmeier bipod attachment.
E3A7FADE-7E7E-470C-985C-297A51325E99.jpeg
7AA3E54C-05AB-483F-8D26-94CC9BA7D13C.jpeg

Is this feasible? What about a quick detachment button rather than two screws? Perhaps even a shorter rail section or even a direct bipod spigot in the 12 o’clock rather than a pic rail.

The Blaser market has nothing else like this, I think it would be very popular.
 

kthomas

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This is fucking cool. I'm not a NV guy (not by choice, limited by $$$), but this is a really cool design.

I have a NV bridge on my .300NM JAE build, and it's annoying that you have to completely remove the NV bridge if you want to take the barreled action out of the chassis.

Really slick design, love seeing the stuff you come up with.
 

Terry Cross

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Are you building them with any built in cant? Since most action rails are 20moa that would be an important option. One of the great things about my JAllen (rip) is that they made the forward NV rail 20 moa to match the majority of custom SA actions. Some clip on optics are known to have a vertical poa shift when an angular discrepancy is introduced.
This should not be an issue if everything else is squared away.

If you are running PVS22, 27 or 30 that is on point, they can handle a 20 moa variance with no POI shift. We do it and document it across a lot of clip on NV all the time in 1 Mil Rt classes.

./
 
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DownRangeThermal

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This should not be an issue if everything else is squared away.

If you are running PVS22, 27 or 30 that is on point, they can handle a 20 moa variance with no POI shift. We do it and document it across a lot of clip on NV all the time in 1 Mil Rt classes.

./
Thanks for the feedback Terry, the Sentinel you built me with the NV rail is still one of my favorite rifles.

Edited....dont want to bring specific brands into the argument.


For the NV rails........If you can take the angular variable out of the equation and not limit product selection then why not?

IMG_20190621_181838_195.jpg
 
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oubeta

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The problem I'm having with my EFR's is they aren't long enough. I'm running NF 1-8's and it's a very short optic.
I can't get my clip on close enough to the scope. I flipped it around and it still isn't close enough.
It's fine with a 3-15, but any of the 1-6 or 1-8's, there is just too much of a gap between the clip on and day optic.

The way my Manners stock is made, there isn't enough meat on it to mount it closer to the day optic. Any ideas on how to solve this problem without switching stocks.
 

Killswitch Engage

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looks great and well thought out. my contention is anyone running nv clip on for any type of killing for any length of time will tell you supplemental IR illumination is a must have especially for detection and many times final id. i would think about locating a side pic rail into your design as it really is a must have. most mounts dont allow for it sans sphur and a couple others and illum way back at the scope body can cause some headache. just my .02 after killing thousands of things with countless of hours under nods with a clip on.
 

LongRifles Inc.

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We got em on the store now.

 
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LongRifles Inc.

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We also have an embedded dual-slot M-LOK base that installs directly into the stock.

1579121212327.png

 
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RyanScott

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What’s the lightest stick you can put this in? In the sense of it being a hunting style stock. The lightest non pistol grip style I’m sure about so far is the MCS-T. What height rings do you need to get this to line up? If it’s 1.5 then I’d be wise to get an adjustable comb correct? I haven’t had a rifle that didn’t have a chassis in some time.
 
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