Free Floating Tube Adapter as used by Armalite, Inc.® , Bushmaster® , and Rock River Arms® This is one of our newer adapters. If your AR Type rifle came with a free float tube forend, this is probably the adapter for you. Fits onto all tube style forends with Uncle Mike’s ® - Type Q.D. sling swivel stud. Armalite, Inc.® T-models, Bushmaster® and Rock River Arms® Varmint series.
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