Dust Cover/Open Bolt Indicator/Safety Flag

Dust Cover/Open Bolt Indicator/Safety Flag All in one dust cover, open bolt indicator, safety flag for the AR-15/M-16 rifle. This product is designed to keep the upper receiver clean from damaging dirt, dust and grit, while the flag indicates an open bolt and a safe weapon. Yellow, heat resistant durable material allows the cover to retain a tight fit in the receiver. Made in the U.S.A. We just got word last week from the National Rifle Association. They gave their approval of DOS in all of their rifle matches.It falls under rule 3.2.1; Empty Chamber Indicator