Larue build done

[Alaskapopo]

Hi I got my 20 inch Stealth upper in today. I have a Larue billet lower on order too but I decided to put another lower I had together for now so I could show it off.

LAR lower receiver, Geissele Trigger, Magpul stock and pistol grip. Larue mount with Bushnell Eliete 6500 2.5-16 power. I have not shot it yet and the Troy sights are on the way. I have not decided which rail covers to use yet.

Pat

[Cameron]

Looks great!

I have a friend with a LaRue Stealth Upper that shoots great, and another mate that is placing an order for a 16" soon.

I personally have a Daniel Defense SPR upper but the same barrel maker and it has been excellent.

Let us know how it shoots.

Cameron

[Evan_O]

Alaska,
Very nice rifle brother! Make sure to post how she shoots once you get her on paper. Well done!

[sapper36]

Very nice, I am waiting on my new lower to come in so I can do something very similar. I m tired of 16" and shorter rifles (Of course thats because I have a 16" LMT allready.) But I have been wanting something to fill the void between my fighting rifle and my 1000 yard bolt gun. You also cemented my choise of 20" versus 24". Great looking rifle.

[Mark71]

That is a VERY nice rifle! Let us know how she shoots.

[C4IGrant]

I see from this post that the LT Stealth is not running so well.

http://www.ar15.com/forums/topic.htm...f=219&t=169882

I also see that the stereotypical TOS trouble shooting team is hard at work (you are stupid and just put more oil on it).

So let's look at some things. From reading your post, you are using Hornady 556 NATO pressured ammo (T2 I am assuming). This ammo has plenty of pressure so that is not the issue.

I am also guessing that you have put one round into the weapon and fired it to see if the bolt locks back?

Since LT does not pin the GB on the gun, the first thing I would do is to see if the alignment is off. You can get a good idea by looking at the GB's position inside the rail. Is it leaning to one side? Is the GB pushed all the way back against the shoulder?

Next, look at the gas key. Staked properly and not loose? Does it appear that the key is sitting squarely on the carrier?

Next, measure the buffer spring and make sure it is too spec. Is the buffer spring SS or CS?

Last couple trouble shooting techniques to narrow down the cause. Take the BCG out and run it in another gun. Then take a KNOWN good BCG and run it in the LT upper and see what you get.


C4

[Alaskapopo]

Thanks Grant. I



It does look like its leaning slightly to the right. I really do appreciate this help. You are a true gentleman.
Pat

[sjc3081]

Just to stir the pot. I'd like to know how the F-ck does LaRue know you voted for Obama. Because they just gave it to you good and got you for 1200 to boot.

[C4IGrant]

I just read the thread on TOS. Boy ML seems a little touchy today. I have no issue with him telling you to "lube it" and the people I was talking about were all the little LT kool aid drinkers that know about as much on troubleshooting an AR as my dog! ML just automatically ASSumes that my comments are directed at him.

Also my comments concerning the fact that LT does NOT stake their GB was said SPECIFICALLY as they can shift if they are hit hard enough (known fact). I also brought up the BCG questions as these can be the main reason for your issues (not because they made the BCG). I did read in a thread on TOS though that they let out a batch of un-staked gas keys and is why I brought it up (nothing more).

Anyone that fixes broken AR's and helps people on the net on a dailey basis knows that GB's that are off center or a gas key that is loose are all too common and need to be looked at (as this is the cause of a lot of problems).

We are a certified armorer and have written/contributed to major AR manufacturer's armorers manuals that are being taught today. Ken Hackathorn refers to us as one of the best AR builders in the country and is who he comes to when he needs an AR built. Think Ken H. would let someone that is "clueless" build his weapons?
We build AR's for troops in the sandbox, Contract Shooters, SWAT and the average Joe. To say we don't know what we are doing is truly retarded.

Oil (as Mr. LaRue brought up) is of course a good thing. With that said, an AR will run BONE DRY for about 50-100rds! LT being the good little AR builder that they are, shipped the weapon with a lubed bolt. So adding MORE lube is NOT going to fix the short stroking issue.

From looking at your pics, it does NOT appear that the GB is canted enough to cause any issues (the GB position actually look more than satisfactory). The other question I asked was if the GB was pushed all the way back against the shoulder? Please take a look at this.

Also measure the the buffer spring and let me know if it is SS or CS (this is a bit of stretch, but you never know).

Shooting the weapon with a KNOWN good BCG will also tell us a lot about where the issue maybe.

Good luck.


C4

[Cameron]

Grant,
I don't mean to hijack a thread but I found the info about the LaRue Stealth upper (BCG and LaRue not pinning the gas block) interesting and I would like to ask you if there is anything I should be looking for with my Daniel Defense SPR upper?

I can't see the gas block well inside the rail, to your knowledge does DD pin the GB and what are their BCGs like?

Thanks,
Cameron