So what are those? 1 inch maybe 1.25 inch groups? What are you trying to show us?
You can shoot 2-2.5 moa with an AR using cheap ammo.
Here is a group I shot at 100yards with my 12 inch AR with an Elcan Specter DR set on 4x using Black Hills match 77gr mk262 mod 1 ammo.
Those are one inch squares.
View attachment 15162
Quality ammo and a quality barrel make small groups. No heavy barrel on this one just a standard profile 12 inch piston driven rifle.
Before anyone asks why the group is away from the center, it's because I have the rifle sighted in with AE black box 55gr. I'm not going to waste a bunch of expensive ammo zeroing the scope to the ammo just to shoot a group on the center of the target then adjust it back to shoot it's regular diet of dirty bird.