Manufacturer: Black Rain BRO-FFR-C-BLK
The Black Rain Ordnance Quad Rail is constructed of 6061 T6 aircraft grade aluminum, while the collar is made of 2024 aluminum. Screws are high carbon steel dipped in black zinc which requires no tools for installation.
Specifications and Features:
Blacked out "T-marks", with 100% backwards compatibility
Quick detach swivel cup
Hard coat type III class 2 black anodizing MIL-A-8625
9.8 oz. installed
Made in the USA