Sighting in an AR15 with BUIS

David the Gnome · May 29, 2010, 12:30 PM

I've got a 16" flat top AR with the standard front sight and a YHM BUIS for the rear. 100 yards is about as far as I want to take it with the BUIS. I've been searching and pretty much all the instructions I see for sighting in the AR are for the fixed carry handle and a 300 meter zero. Does anyone have some instructions or tips on how I can at least get close to a 100 yard zero with the BUIS?

Rob228 · May 29, 2010, 06:44 PM

Zero it at 25 yards, and you will hit center mass out to 250 (That is the theory anyway)

It will put you within a few inches at 100 too.

wmeSha · May 29, 2010, 10:49 PM

I used a 50 yard zero on my AR based on information similar to this. Notice that if you use a 50 yard zero, you have "functional accuracy" out past 200 yards.

Zak Smith · May 29, 2010, 11:05 PM

A 25- yard zero is a recipe to miss everything high from 50 to almost 300 yards.

A 50-yard zero is the way to go.

May 29, 2010, 12:30 PM	#1
David the Gnome Senior Member Join Date: July 5, 2007 Location: Lexington, KY Posts: 3,090	Sighting in an AR15 with BUIS I've got a 16" flat top AR with the standard front sight and a YHM BUIS for the rear. 100 yards is about as far as I want to take it with the BUIS. I've been searching and pretty much all the instructions I see for sighting in the AR are for the fixed carry handle and a 300 meter zero. Does anyone have some instructions or tips on how I can at least get close to a 100 yard zero with the BUIS? __________________ Si vis pacem, para bellum. Last edited by David the Gnome; May 29, 2010 at 04:59 PM.

May 29, 2010, 11:05 PM	#4
Zak Smith Senior Member Join Date: December 12, 1999 Location: Fort Collins, Colorado, USA Posts: 2,675	A 25- yard zero is a recipe to miss everything high from 50 to almost 300 yards. A 50-yard zero is the way to go. __________________ Zak Smith . DEMIGOD LLC . THUNDER BEAST ARMS CORP . COLORADO MULTI-GUN *My PM inbox full? Send e-mail instead.*

May 29, 2010, 06:44 PM	#2
Rob228 Senior Member Join Date: May 29, 2010 Location: Broomfield CO Posts: 466	Zero it at 25 yards, and you will hit center mass out to 250 (That is the theory anyway) It will put you within a few inches at 100 too.

May 29, 2010, 10:49 PM	#3
wmeSha Senior Member Join Date: June 3, 2007 Location: Northeast Missouri Posts: 114	I used a 50 yard zero on my AR based on information similar to this. Notice that if you use a 50 yard zero, you have "functional accuracy" out past 200 yards.