Gunsmithing Oversized Recoil Lug in AICS

climbinbrandon

climbinbrandon

Private
Minuteman
Oct 22, 2010
30
0
44
Savannah, GA
#1
Howdy All,
Does anyone know if the AICS will accept an action w/ a .250" oversized recoil lug? I haven't bought the chassis yet, and just wanted to be prepared in the case that I will have to have some machining done. Thanks in advance. :)Happy shooting.

Brandon
 
#3
Re: Oversized Recoil Lug in AICS

Unless AICS change something recently the short action stock will need to be milled, long action will take the .250 thick lug.

Problem comes in when you use some aftermarket lugs, they are too tall and it's not a good idea to mill the slot in the stock deeper. You are better off milling the bottom of the lug and making it shorter.
 
#4
Re: Oversized Recoil Lug in AICS

Okay, it's an S/A I'm working with. I guess I should have specified. I'm assuming that specops worked on a L/A? Any idea what height the lug would need to be(or be milled to) to fit properly? Thanks for the timely input guys.
grin.gif
 
#5
Re: Oversized Recoil Lug in AICS

Factory lugs are right around 1.69" tall, anything taller then that I recommend you mill the bottom of the lug and leave the stock the factory depth.

It’s best to have all the parts in hand so exact measurements can be made and check the fit. Each lug manufacture is a little different and some can have a little more metal above the barrel tenon that can skew the measurement.
 
#6
Re: Oversized Recoil Lug in AICS

The new AX AICS will fit a recoil lug up to .400" thick. Jonathan at SRT told me so a week ago.
 
#7
Re: Oversized Recoil Lug in AICS

Awesome. Thanks for the info HateCA. The lug I'm running is 1.83" tall, .250" thick, w/ a 1.077" bore for the larger Manson threads. I also picked up some good knowledge from the thread where you helped out boredengineer with his 5R/AICS 2.0 build. Being that my action is blueprinted, and has an X-mark trigger, is the AICS still a viable option?
 
#8
Re: Oversized Recoil Lug in AICS

Every AICS stock I've used with the X-Mark trigger needed a small amount of the stock milled away on the inside to clear and allow smooth safety movement. Some say theirs dropped right in with no interference but I've never seen it, I can only say what I've had to do.
 
#9
Re: Oversized Recoil Lug in AICS

Steve,
Did Jonathan give you any idea of when the AX chassis is going to be available? I'm guessing that you're waiting for it as well? That was my original choice, but it's getting close to crunch time on my build and still no AX release. That's why I'm opting for the 2.0. If I can get my receiver into it w/o milling, the AX may be worth the wait. I PM'ed Stacey @ AINA a couple of days ago and he says the AX is in the finals. That's all I got outta him.
 
#10
Re: Oversized Recoil Lug in AICS

HateCA,
Got a real name? I'm deployed right now, but I'm going to talk all of this over with my smith when I get back in a couple of weeks. Barring major issues or release of the AX chassis, I'll forge ahead with the AICS and post issues/results/pics to this post. Thanks a ton for all of the great info guys. My understanding has been vastly improved.
grin.gif
 
#13
Re: Oversized Recoil Lug in AICS

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Skunkworks</div><div class="ubbcode-body">The SA chassis' have been changed fairly recently to accept thicker recoil lugs. I've built on a lot of them lately using my own lug with no mods to the chassis. The trigger area is the only mods that were needed. </div></div>

Well that's good to know, I guess they're still sending me new stocks old versions then
confused.gif
. Still if the lug is too tall or thicker then .250, like the Tubbs or Badger, one will still need a mill.
 
#14
Re: Oversized Recoil Lug in AICS

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootinbrandon</div><div class="ubbcode-body">Steve,
Did Jonathan give you any idea of when the AX chassis is going to be available? I'm guessing that you're waiting for it as well? That was my original choice, but it's getting close to crunch time on my build and still no AX release. That's why I'm opting for the 2.0. If I can get my receiver into it w/o milling, the AX may be worth the wait. I PM'ed Stacey @ AINA a couple of days ago and he says the AX is in the finals. That's all I got outta him. </div></div>

Jonathan at SRT was hoping to see them in a month or two. However someone from AINA posted on the Hide that the AX chassis may not be available until the second quarter of 2011. I want to use the AW mags, so have decided to put my parts into a temporary stock until the AX chassis is available. I bought an excellent laminated M700 stock on ebay for $90, set up for a varmint rifle with a heavy barrel.
 
#15
Re: Oversized Recoil Lug in AICS

One other side note, I was speaking to PTG three days ago and he and Stiller Precision are working on a chassis system that will compete with the AICS.

Of course having a model ready to sell would be many months later, but this could be a great rifle, and made right here.
 
#16
Re: Oversized Recoil Lug in AICS

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: HateCA</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Skunkworks</div><div class="ubbcode-body">The SA chassis' have been changed fairly recently to accept thicker recoil lugs. I've built on a lot of them lately using my own lug with no mods to the chassis. The trigger area is the only mods that were needed. </div></div>

Well that's good to know, I guess they're still sending me new stocks old versions then
confused.gif
. Still if the lug is too tall or thicker then .250, like the Tubbs or Badger, one will still need a mill. </div></div>

You must be getting NOS Randy, as the lugs I make for my INFIDEL builds are .280" thick and I have plenty of room in front of the lug. My lugs, in general, are not as long as others so plenty of clearance at the bottom as well.
 
#17
Re: Oversized Recoil Lug in AICS

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootinbrandon</div><div class="ubbcode-body">Steve,
Did Jonathan give you any idea of when the AX chassis is going to be available? I'm guessing that you're waiting for it as well? That was my original choice, but it's getting close to crunch time on my build and still no AX release. That's why I'm opting for the 2.0. If I can get my receiver into it w/o milling, the AX may be worth the wait. I PM'ed Stacey @ AINA a couple of days ago and he says the AX is in the finals. That's all I got outta him. </div></div>

Brandon,

I found the post, from Nov. 17. Read the end of the post:

I would like to give some information on AX338 and AW338.
The .338 version of the AW was designed as part of a collaboration with Lapua who designed the round. It was the AI/Lapua partnership which brought the .338 Lapua to the market in the mid 1990's. AI have sold over 3,000 AW338's so it is not exactly correct to say it was never designed to handle the .338. It was as a result of the AW338 that the .338 round entered the market when it did and was sold to various military customers for over 12 years. In 2008 the British forces were equipped with AW338's and earlier this year it was reported that an L115A3, which is an AW338 version, made the longest ever recorded kills in Afghanistan. Not bad for a weapon never designed to handle 338.
The PSR requirement and the demands of military users, primarily driven by night vision and other accessories, influenced the design of the AX338. At that time we took the opportunity to increase magazine size from 5 rounds to 10, added a pistol grip, increased the safety margins on the bolt and action, changed the butt spike, changed the way a magazine is loaded, changed the length of pull and some other aspects of the design.
It is a new product and not almost similar to the AW with a few cosmetic changes.
We are now in production and have already sold to military groups. The AX338 will be available in the USA during the first quarter of 2011 as will be the AX308. The AX AICS will follow in the second quarter.
Any other questions you should call AINA in Fredericksburg and they will be please to answer your questions.
Tom Irwin
Accuracy International
 
#18
Re: Oversized Recoil Lug in AICS

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Skunkworks</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: HateCA</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Skunkworks</div><div class="ubbcode-body">The SA chassis' have been changed fairly recently to accept thicker recoil lugs. I've built on a lot of them lately using my own lug with no mods to the chassis. The trigger area is the only mods that were needed. </div></div>

Well that's good to know, I guess they're still sending me new stocks old versions then
confused.gif
. Still if the lug is too tall or thicker then .250, like the Tubbs or Badger, one will still need a mill. </div></div>

You must be getting NOS Randy, as the lugs I make for my INFIDEL builds are .280" thick and I have plenty of room in front of the lug. My lugs, in general, are not as long as others so plenty of clearance at the bottom as well. </div></div>

the last couple short action aics 2.0 i've dealt with had a lug recess a rch over .25". i could fit a 1/4" endmill through it without touching the sides but it was close, real close.
 
#19
Re: Oversized Recoil Lug in AICS

Thanks for all the helpful info guys. Does anyone know the actual depth of the recoil lug recess? Btw, I may not be too active in this posting as my time on the net is limited presently. I am checking and reading as I can.
smile.gif
 
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