Accuracy Speaks .22cal AR-15 uppers

[fiveofnine]

I was talking with a instructor at RBC comparing notes on AR .22 conversion accuracy.  The problem is the 223 barrels are to big.  Accuracy Speaks will put a .22 match grade barrel on your dedicated AR upper solving this problem.
 
http://accuracyspeaks.com/public_html/22lrar15.htm

The owner, Derrick Martin is a long time National Guard shooter and a great patriot.  He is now building very accurate guns.

[Old Dog]

The problem may be ammo (brand/bullet velocity).

My CAR15 will shoot dime sized 25 meter groups when I do my part.  That is, my CAR 15 with a .22 rimfire conversion kit and Remington golden bullets.  The CAR15 has a very short barrel as compared to most AR's.

To each his own, use what works best for you.

[ripersnifle]

Barrel Twist is HUGE for the conversion kits.
Please see topic below.
It's in the section of the trial board in this section if the link doesn't work.

http://appleseedinfo.org/smf/index.php?topic=8898.0

sk

[gunville]

I think a lot more is made of the barrel size than really matters; twist rate (as pointed out in other threads) may have more importance.

I use my conversion with my standard 1:9 .223 upper (20") and get consistent 4 moa groups shooting prone using CCI blazer ($19.99/500). 

Finding an ammo that shoots was the key - soft nosed blazer did it for my ceiner - it didn't like the plated stuff (federal etc.).

I can't justify in my mind/wallet a dedicated .22lr upper when I can shoot 4moa.

You can spend more on a dedicated .22lr upper than a decent .22lr that is really accurate.

[Daniel]

The issue is rate of twist, not barrel dia.

[Daniel]

Even so, I have seen some VERY nice rifleman standard targets that were shot with a .22 conversion.