Black Rain Ordnance, Inc. rifle free float quad rails 12" Flat Dark Earth. Constructed of 6061 T6 aircraft grade aluminum, collar is made of 2024 aluminum. Screws are high carbon steel dipped in black zinc which require a tool less installation. Features include blacked out "T-marks", with 100% backwards compatibility, quick detach swivel cup, hard coat type III class 2 anodizing MIL-A-8625; weighs 14.8 oz. installed. Made in the USA.
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