This is a Midwest Industries Accessory known as the M-LOK, model MI-3MR.
Easily add M-Lok rail sections to your M-Lok equipped handguard with the Midwest Industries M-Lok 1913 Mil Spec Rail Sections. Now you can place your accessories where you want and need them leaving you with a smooth handguard everywhere else. If you want versatility you need the Midwest Industries M-Lok 1913 Mil Spec Rail Sections.
Features:
Three slot 1913 Mil-Spec Rail Section
M-LOK compatible
Mounting hardware included
