Black Rain Ordnance, Inc. Flat Dark Earth 7" free float carbine quad rails
Specifications and Features:
Constructed of 6061 T6 aircraft grade aluminum, collar is made of 2024 aluminum.
Screws are high carbon steel dipped in black zinc.
Blacked out "T-marks"
100% backwards compatibility
Quick detach swivel cup
Hard coat type III class 2 anodizing MIL-A-8625
Weight 9.8 oz. installed
Made in the USA.