http://www.bushmaster.com/pdf/ACR-Web-Notification.pdf

“Bushmaster Firearms International, LLC has become aware of a possible firearms performance issue that may develop with a small number of ACR rifles and we are requesting you discontinue use of this rifle immediately, and contact us at your earliest convenience so that we can make the necessary arrangements to have the rifle returned to us for inspection and update if necessary.”

“During routine test firing, Bushmaster discovered a design flaw which could result in multiple rounds firing continuously when the trigger is pulled. This unexpected firing of multiple rounds creates a potentially dangerous situation.”

Click Here for complete text of Bushmaster ACR Recall Notice (PDF)
If you have a Bushmaster ACR Rifle:

Stop using the rifle immediately.

Contact the Bushmaster Customer Service Department: 800-883-6229

Get Return Authorization (RMA) code from Bushmaster and ship gun to:

Bushmaster Firearms International, LLC
Attention: Dept. ACR
999 Roosevelt Trail
Windham, ME 04062