You can find the Magpul ACS Carbine Stock Mil-Spec Black here Fast $9.95 shipping! Orders over $200 ship for free!

The Magpul ACS (Adaptable Carbine/Storage) is a storage-capable stock with an improved cheek weld and dual rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock. A streamlined anti-snag design shields the release latch to prevent accidental activation. The ACS also features a supplemental friction lock system that when engaged minimizes stock movement for enhanced weapon stability.

The ACS comes standard with a 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

Features:
Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, S&W, LMT, and others. Sloping cheek weld provides a wide contact surface for user comfort Two water-resistant battery storage tubes located on the left and right sides of the stock Each tube will store up to three CR123 lithium or two AA batteries Tubes are accessible from the rear via a tethered, hand-removable rubber plug Storage compartment in tail of stock with positive latching access door on right hand side Supplemental friction lock minimizes stock movement. Shielded release latch prevents snagging and accidental operation Premium chrome-silicon lock spring provides positive locking and long service life. Removable 0.30" Rubber Butt-Pad offers an anti-slip surface and increases impact protection. Compatible with Magpul ASAP and other receiver-mount sling attachments Sling Mounts: Mid - Now includes the QD Swivel Sling Mount that fits up to 1.5" push-button swivels Rear/Bottom - 1.00" sling loop
Specifications:
Color: Black ACS, Mil-Spec (stock configuration) Weight: 0.88 lb. Weight, w/ Rec. Extension: 1.14 lb. Length, Maximum: 7.95 in. Width, Maximum: 2.58 in. LOP Adjustment Range: 3.25 in. LOP, M4 Collapsed: 11.75 in. LOP, M4 Extended: 15.00 in.