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Accuracy International Chassis Information Thread

After seeing questions asked and answered about the various Accuracy International Chassis System (AICS) offerings sporadically posted, and having asked and then fielded those same questions myself, figure it would be a good idea to start a singular centralized thread to document the history and details of the AICS.

Over the course of this thread, I plan to cover the original AICS, the later revised “small bolt handle notch” AICS, the AT AICS, and both the pre and post 2014 AX AICS.

Let’s start with the original AICS, commonly referred to as the Legacy AICS. This chassis was based on the classic Arctic Warfare (AW) chassis frame with thumbhole skins/stock sides. The Lagacy AICS came in three standard configurations:

1.0 - Fixed stock, fixed cheek
1.5 - Fixed stock, adjustable cheek
2.0 - Folding stock, adjustable cheek

Of course, there are the oddball configurations, such as 2.0 rear skins with fixed cheek.

Before going into the standard configuration Legacy AICS models, let’s start with a less common original first version of the 1.0:
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This is the original AICS as when it was first released, and only made as such for a year or two before changes were made to the eventual Legacy AICS as most are familiar with. These original first versions of the Legacy AICS are identified by two main differences, a completely welded chassis frame and a fully swept back bolt handle notch:
IMG_0997.jpeg

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And as everyone is already aware of Accuracy International’s color inconsistency, the older green skins were a shinier and more olive drab green compared to the later green Legacy AICS skins:
IMG_1004.jpeg

IMG_1005.jpeg

IMG_1006.jpeg


Similar breakdowns of the other AI chassis systems to follow if there’s interest.

Barrel Torque Ludicrocity

Dude
Show me the data that shows a difference in how the barrel shoots. between 30, 70 and 150 lbs of torque.

Also since these actions and barrels are not very elastic, what effect do you get on the threads every torque cycle?

If you cant show a compelling reason why you need to torque it more than say 50 lbs, despite what your little book of formulas says then you are wasting everyones time.

Then add in the ability to fixture it in place without damaging the action, lugs, tooling or fixturing while using insane torque values.


Some of the very best smiths in the world who have been doing this a long time, barely torque the barrel. Their barrels have won world records and championships. And yet we are supposed to listen to marginal to shitty shooters who have a rudimentary understanding of how material science applies to precision rifles.
you really need to relax. Just because someone does not agree with you does not mean you have to attack

I have been doing this a ton longer than most and have heard both arguments. All it has shown me is more than one way that do it. I prefer enough torque I don’t worry if it will unscrew or wander as it heats

This reminds me of a smith whose bedding jobs looked like crap but his machine work was so good they still punched perfect groups

What ever works for you works for you

Ammo Hornady .50 cal 750gr A-Max (100 Rounds)

I have one case (100 rds) of Hornady .50 cal 750gr A-Max for sale. They are all the same lot and the case was only opened to take picture. I'm asking $800 plus shipping through UPS. Please message me with any questions or offers.

ISO:
308 prefit barrel for Zermatt TL3 (partial trade)
22 Creedmoor prefit barrel for Zermatt TL3
Origin Action
Impact action


50 Cal .jpg

Firearms Radical Defense CS3 and Griffin Armament Dual Lok 5 - both on form 3

Selling a couple demo cans I have lying around that I no longer need.
First up:
Radical Defense CS-3, comes with everything it came with from the factory including a 5/8x24 threaded flash hider - Round count is under 100, mostly 300 blackout. Little bit of paint wear as can be seen in the pictures but nothing major.
$450 shipped to your dealer

(I also have a Radical Defense CS-5 TI with low round count, it looks identical to the CS-3) price on that one is $500 as well.)

Second up:

Griffin Armament Dual Lok 5 in FDE, again it comes with everything it came with from the factory including the 1/2x28 threaded muzzle device.
Little higher round count on this one - around 400, not a heavy firing schedule.
$500 shipped to your dealer

This will ship from me and I will handle the form 3 transfer to your dealer personally ( I have my FFL/SOT)
If you have any questions feel free to ask.

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Barrel Torque Ludicrocity

Some of the very best smiths in the world who have been doing this a long time, barely torque the barrel. Their barrels have won world records and championships. And yet we are supposed to listen to marginal to shitty shooters who have a rudimentary understanding of how material science applies to precision rifles.
Okay, since you’re demanding proof of high torque, I’ll need proof of your claims here. Who are the “very best smiths” who barely torque the barrel who have won world records and what are those records?

I am listening as I want to learn.

Barrel Torque Ludicrocity

And yet we are supposed to listen to marginal to shitty shooters who have a rudimentary understanding of how material science applies to precision rifles.

This thread is good for a laugh. Thanks. I for one can’t outshoot @MikeRTacOps but it’s nice that you can 👍🏻.

Honest Gun Reviews

The one gun I have that I never heard of, recommended by a friend, is my Howa. Hard to beat for the money, zero issues, shoots better than me.
absolutely a way under appreciated brand. had several no issues. sometimes reviews diss things that are low end but perfectly serviceable and work above price point. Savage being a good example. not AIs or Vudoos and the rich boys whine about them. but have always been functional,accurate for $s and CS,the 1 time i used it,excellent. the importers of Tikka,Howa,Sako are a bit of a down side and pretty unresponsive in my experience.
sometimes you get less than you pay for and sometimes you get more.