This is a Bravo Company known as the Rail Section, model BCM-MCMR-1913-A3.
Bravo Company's BCM 3 Inch Picatinny Rail Section" Aluminum M-Lok Compatible Modular rail section is made of hard anodized aircraft aluminum alloy. It is made to the Mil-Standard 1913 Picatinny Arsenal Specifications and it features a snag resistant design while retaining Mil-Standards.
Features:
M-LOK® Compatible
Aluminum
