^^^^^This in a middie.
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No one can make that kind of accuracy guarantee, because '1 moa' is kinda subjective. Some people accept a 3 shot group. Others (molon) spend serious time and put rifles to the test on a 10 shot group, and usually 3 groups for significant data. Also, you should ask yourself what kinda bullets you will put down the tube. If it's all match ammo, than '1 moa' is a lot more realistic than with off the shelf soft points. Lastly, while the AR is capable of excellent accuracy, most of these guns are still rack grade rifles and not true match grade. For example Molon, has a krieger barreled AR15, that he gets 10 shot groups just over a half moa with hand loads.
Without getting too wrapped around the axle on '1 moa' Id' say with match ammo and a good quality stainless barrel 16-18" will produce a 'good' group.
Maybe I should re phrase my wants. I want the most accurate "battle rifle" possible. Not looking for a heavy barreled tank. Right now doesn't sound like bcm is really what I want. If i have to spend Larue money to get it that's what I'll do.
AR of good/premium 18" fluted barrel, Wylde chambering, w/ Geiselle SSA-E trigger - lower/upper of choice - mounted to a Luth-AR buttstock would me my choice.
That's what I did and from the bench using Privi ammo she'll hold/print well within the X-Ring on the std high power 200-yd target.
Have you thought about building one to the specs that you want? I'm in the 18 barrel camp for a 5.56 hunting rifle. Check out the Rainier Arms Select Match Barrel, it shoots like a heavy barrel but carries like a light weight. The Brands you listed have great factory set ups, however building one will allow you to pick and choose the features you want without shelling out more $ than you have to.
If you are giving serious thought about going with LaRue, you may want to give them a call and check their production status and wait times. Sometimes they are swamped with orders and it may take quite a while for them to actually catch up and get their rifles out to the customers. With the political climate taking another turn for the worst (talking gun bans and restrictions), people go crazy ordering and the companies fall behind after being overwhelmed with new orders.
Check out Ballistic Advantage barrels. They "guarantee' sub-MOA accuracy with match-grade ammo.
http://ballisticadvantage.com/
Don't really think I want to build a gun. I have no clue what I'm doing in that regard.
Grab a BCM blem lower and an 18" ss410 upper with 15" kmr-a.
Easy peasy.
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