The MOE Fixed Carbine Stock - Commercial-Spec Model (Magpul Original Equipment) provides a fixed, non-collapsing stock option for commercial-spec size 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.