Just to clear some points:
Even when certain police units are equipped with fully auto M-16s as well as other types of fully auto capable rifles/guns, by absolute restriction they are not allowed to go full auto at any time other than military engagement.
This was instituted as a result of an agreement reached by the DR and world body representatives after sanctions were being promoted against the police and military performing policing actions. It used to be that during some intercambios de disparos, the said actors utilized full auto and the outcome was very deadly for the suspects.
This goes back during the administration of Candelier...
As far as I know, the only unit that's allowed to make use of full auto as a matter of immediate neutralization of threats, is the guardia presidencial. This is known as the first regiment of the presidential guard. They carry at full auto, all the time.
There's no way any officer or agent fired his weapon at full auto during that shooting.
Keep in mind DR units employ either the M-16 or M-4s, the civilian semi-auto AR-15 is NOT issued to units.
These will be found on the hands of the bad guys 99% of the time.