This is a Magpul Industries Trigger Guard known as the Enhanced Trigger Guard, model MAG015.
The Enhanced Trigger Guard is a black anodized aluminum drop in replacement for the AR15/M4 weapons platform. It features a shallow "V" shape for better use of gloves in tactical shooting or cold weather operations. The Enhanced Trigger Guard is non-folding" has rounded edges" and fills the annoying "gap" at the rear of the standard trigger guard. All mounting hardware included.
Features:
Black anodized aluminum
Features a shallow V shape
Non-folding with rounded edges
All mounting hardware included