This is a Magpul Industries Stock known as the MOE Carbine Stock, model MAG401-BLK.
The MOE Stock - Commercial-Spec Model (Magpul Original Equipment) is a drop-in replacement buttstock for AR15/M4 carbines using commercial-spec sized receiver extension tubes. Designed for light" fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. The Commercial-Spec Model includes an extended 0.55" thick rubber butt-pad to provide positive shoulder purchase and accommodates the longer" slanted back common to most commercial-spec tubes.
Features:
Replaceable 0.55 Rubber Butt-Pad;Compatible with Magpul ASAP®, ASAP® QD, and other receiver-mount sling attachments
