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A Small Rant about AR mounts ahead of April Fools Day

Ikeman83,

I just came across this

Cantilever Monomount

I don't know this product, but it's cantilevered and in 36mm


This is the Area 419 cantilever, and it would need 2 pic rail slots worth of cantilever more than this:

tsm-cantilever-web-5-scaled.jpg


Trump is back…the “Now What” thread

Why do you say it has nothing to do with OPEC increasing production? It has everything to do with that - 400,000 barrels a day increase, implemented way ahead of plan. OPEC wants oil too cheap for US producers to drill, baby, drill. OPEC will cut back supply again once another Democrat is in the White House.
iu

Accuracy International Picture Thread

Someone has learned the error of his ways and is trying to trade his Terminus for an AI.




Lololololololol
That someone just bought his third AI yesterday, and now wants a fourth ;)
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U.S. Army/Navy/USMC M14-based sniper and DMR/SDM rifles circa late-1960s to late 201Xs

On that subject, I am curious, were you ever trained on the 'barrel tension screw' aka 'Pure Voodoo screw' on the SAGE chassis back in 2010? I have heard anecdotals that this magic screw was very carefully adjusted for all EBR-RIs when made at Rock Island circa 2009-2012 by two armorers who built basically all of these rifles.....but in the field soldiers, being soldiers, would dissemble the rifle and/or take the top cover off, and then overly tighten that Voodoo screw upon reassembly - as some did not know what that screw was for. Overtightening that one little screw binds the barrel, especially when it starts to heat up - and thus accuracy goes from 1 MOA to 3 or 4 MOA... Yep, that is what I was told, and the EBR-RI Supplemental guide speaks to this critical feature, but its not clear how well this was understood in Afghanistan.

Question: Back in 2010 were you trained by the Army or aware of this interesting Voodoo screw? Just something I am curious about...

View attachment 8659904

View attachment 8659885

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So, this is a very unique feature - and one Army armorer made the mistake of dissembling newly received EBR-RIs for cleaning, but had no idea that he was overtightening that Vodoo screw when he put them back together. He tested the rifles afterwards and couldn't get them to group anything like the test targets that was included in every shipping box of an EBR-RI - so even that unit's official US Army armorer was oblivious to this aspect of the SAGE chassis. Rock Island only did 3-shot groups w/ M118LR for each EBR-RI, and 1.5 MOA was the max allowance. Reportedly, per the below article, only one rifle out 5000 made from 2009-2012 failed that technical accuracy requirement. Most looked like these test targets, typically under 1 MOA for 3-rds: (I wish they would have done 5-rd groups, but anyhow)
View attachment 8659909

...Why do I ask this question? Well, on my rifles the Voodoo screw slightly protrudes from the top cover, unlike the other allen head screws that are pretty well recessed. So, at first glance one might think that screw was sort-of loose and should be tightened down so it is flush with the top cover - but that actually puts a lot of downward pressure on the barrel about 6 or 7 inches from the muzzle, and once it starts to heat up - the 'binding' pressure goes up quite a bit, and accuracy goes into the toilet... Fwiw re the Voodoo screw...
Sounds like a f-ing disaster waiting to happen out in the field getting banged around
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PortaJohn

I have been saying this shit FOR ALL MY ADULT LIFE!

The only time I've gotten the flu as an adult is when I gave in to my mom's hounding and got a shot. Like clockwork I got flu. About ten years ago I told her no more and to stop saying it, because I was not doing it period.

A&D FX Scale Deal

Anyone know

Where can I find this information? 😭
On the first page?
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A Small Rant about AR mounts ahead of April Fools Day

How much cantilever you want? I have a ZCO 420 in a Badger Max on a small frame and it works fine

Enough to mount the scope?

ZCO 4-20x50 is 90mm of eye relief plus (79+62.5+53) mm of scope from the ocular to the front of the saddle, so 90+194.5mm of scope from your eyeball to the minimum placement position of the rear of the forward ring. (chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.zcompoptic.com/images/products/zc420/ZC420%2001MIL%20Datasheet_ENG_web.pdf)

The Kahles is 92mm of eye relief plus (106+71+53) mm of scope from the ocular to the front of the saddle, so 92+230mm of scope from your eyeball to the minimum placement position of the rear of the forward ring. (https://www.kahles.at/us/sport/riflescopes/k328i-3_5-28x50i-dlr)

In other words, the rear most position for the rear of the forward ring on the Kahles is 37.5mm further forward than on the ZCO, or 1.5".

The Area 419 cantilever mount would need to be about 2 pic rail notches longer of cantilever.
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