How does that work with the sights if you use a conversion, is the zero roughly the same for 5.56 and 22LR, or do you have to keep adjusting your sights when you go between the two?
I have a CMMG dedicated 22LR upper that I absolutely love. I'm about to have to buy a replacement bolt for it as I seem to have worn out the original one after putting over 5,000 rounds through it in the year and a half I've had it. The way I figure it that upper has already more than paid for itself since 5,000 rounds of Wolf 5.56 would have run me right about $1,250 (I've been paying 25 cents a round for Wolf), whereas those 5,000 rounds of 22LR cost me about $200 (been paying 4 cents a round at Walmart), and the upper was considerably less than $1,050.
The other nice thing about the 22LR AR is that not only is it fun to shoot, but I don't think about how much $$$ worth of ammo I'm blowing away while I'm shooting. Not hearing the cha ching of a cash register every time I pull the trigger makes shooting a lot more enjoyable.