The Magpul ACS Carbine Stock, a drop-in replacement buttstock for AR15/M16 carbines, will enhance your rifle control and accuracy. Streamlined, anti-snag profile prevents accidental operation. Dual water-resistant battery tubes and a compartment located in the butt of the stock provide multiple storage options. Friction locking system stabilizes the stock, offering increased accuracy. Includes a 1" sling loop, reversible push-button QD sling mount and a replaceable 0.30" rubber butt pad that eliminates slippage even when wearing body armor or modular gear. Sloping cheek pad improves weld. Compatible with Magpul ASAP and other receiver-mount sling attachments.Color: Black.