Sights for pistol caliber ARs?

[J_McLeod]

I have a lower that I need an upper for. I've been looking at .223, 9 or .40 and Rock River. They have some CAR upper halves in 9 and 40 flat tops, but no sights. What would you do for sights on one? Would it change a lot since the typical AR irons are made for .223?

 

[rcmodel]

IMO: No.
Sights is Sights.

They are all adjustable to sight in the weapon, no matter what caliber it is.

Pick open sights, a red-dot, a holo-sight, or a scope.

Whatever floats your boat should work just fine once sighted in.

rc

 

[briansmithwins]

If you do irons with range adjustment the markings will be totally off.

Personally, I'd say red dots are tailor made for pistol cal carbines.

BSW

 

[Risky]

Most people just use the regular AR15 iron sights. Like briansmithwins said, the range adjustments won't match up since they're for 5.56/.223 but you're not going to be making adjustments for a pistol caliber anyway. Just sight it in for 50 or 100 yards, whatever you shoot at, leave it alone and you'll be set.

 

[Deus Machina]

What I would do is sight it for 25 (or 50 or 100 or whatever you usually shoot at) and then, if you want the adjustments to match up, adjust until it hits where you want again. Then color in that marking.

 

[Walkalong]

I have a red dot on my 9MM AR and it works great. Banging steel at 100 yards is child's play. A low power scope would be nice as well.

 

[Tommy Van Alen]

for a red dot on a pistol caliber carbine, I'd go with a C-more. They even make an all aluminum version and then there is another version with the built in rear peep sight like on a normal AR.

I would guess that in 9mm or .40 S&W that past 100 yards the trajectory is like a rainbow. So just have it zero'ed at makes the most sense to you.

 

[Walkalong]

Since posting, my son and I shot my 9MM AR at 300 yards at a 12" round steel plate. Even with zero magnification we could hit it fairly regularly. Lots of drop though.