The MOE Fixed Carbine Stock (Magpul Original Equipment) provides a fixed, non-collapsing stock option for carbine-length buffer tubes. The MOE Fixed Carbine Stock has a slim profile, improved cheek weld, and multiple sling attachment options, and is compatible with the ASAP Plate and PRS Extended Rubber Butt Pad.
Installation is non-armorer and does not require the castle nut or lock plate to be removed.
Unsure whether Mil-Spec or Com-Spec is required? Link