This is a Magpul Industries Accessory known as the M-LOK Tripod Adapter, model MAG624-BLK.
The M-LOK Tripod Adapter for metal M-LOK compatible hand guards or forends mounts directly onto any tripod head equipped with the common Manfrotto RC2/Q2 interface. This adapter allows the user to mount their rifle directly to a tripod head without the use of any additional saddles giving them a secure shooting platform. The M-LOK Tripod Adapter is machined from aluminum and finished in Mil-Spec anodizing which offers excellent corrosion resistance. The beveled ends and corners produce a minimal footprint allowing the user to keep the M-LOK Tripod Adapter attached to the weapon system at all times with minimal snagging hazards. Made in U.S.A.
Features:
Compatible exclusively with Manfrotto products using RC2/Q2 rapid connect adapter
Mounts to metal M-LOK hand guards
Compact and low profile
