Longevity, Accuracy Tips for the AR15

[LRRPF52]

There's a thread on Sniper's Hide right now where a guy asked what he could do to fix his accuracy problems with his BHW .264 LBC-chambered AR15. I mentioned the receiver face squaring and extension bedding, and he did it first to his .204 Ruger, having never heard of this before.

Here are some of the posts after he received his lapping tool:

Posted by precision308: I lapped my receiver today and found that half of the receiver was nit making contact. Lapping didn't take long at all. This sounds good in theory lets hope that this helps.
Thanks everyone

Here's a post from 204 AR:

I don't care who trues and beds and who doesn't, but I proved it to myself that it can help tremendously. On the advice of Mike at Dtech I tore down an upper (that I had built) that was underperforming and sent it in to him for truing. Upon reassembling the accuracy improvement was significant; the face of that upper had been off quite a bit. I've since had a receiver lapping tool made and use it on any builds I put together. I'm a believer.

Precions308's update:

Here were my results..........
The grendel had no change in accuracy after lapping the receiver. I did not locktite anything on it. I plan on locktiteing theb barrel and the gas block and we will see how it goes. Now on the other hand I have a 204 I was never happy with. I lapped the receiver on it which was way off and I locktited the barrel and the gas block. It brought a one inch gun down to 1/2 in. I shot three quick groups with it and the largest group was just under .6 ".

Ya I'm happy too. I used blue loctite. Ill update my results on the grendel once I get them done. I ll get it bedded done thisweekend but won't get to the range untill early next week.

Well got out today and shot the gendel. After going back and locktiting the barrel and gas block ive had no increase wirh accuracy. I've contacted bhw and they told me that they would stand behind the barrel.

I switched those receivers and yesterday shot four 5 shot groups at 100yds. Group sizes were approximately .5, .7, .75,.7. I consider this acceptable. Would I like to see better. Yes but acceptable. It appears for whatever reason rather it be the stiffness of the new receiver or something was way out of spec on my other receiver it played a major role in accuracy.

I like to learn new things. For what I paid the barrel is acceptable and with speaking with bhw they were eager to help. It was a pain but now that I got consistanty I can work on the loads and hopefully improve on what it is already shooting. I will say from the results of my 204 I believe in loctiting andblapping the receiver. But I still want to know if that first receiver is out of spec somehow or if the stiffer receiver was thebcure.
THANKS EVERYONE

The upper receiver is an important component in the foundation for accuracy.