ACS M4 Carbine Collapsible Butt-Stock Military Model

The Magpul ACS (Adaptable Carbine/Storage Military Model) is a drop-in replacement butt-stock for carbines using mil-spec receiver extension tubes. A streamlined, anti-snag profile shields the release latch to prevent accidental activation and the extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure by resisting spring relaxation. Similar to the CTR, the ACS also features a supplemental friction lock system that eliminates wobble* for enhanced weapon stability and accuracy. Dual, rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock provides multiple storage options. The ACS comes standard with a rubber butt-pad which gives positive shoulder purchase to prevent slippage even with body armor or modular gear.

Note: There are two basic types of M4 Carbine Receiver Extensions (buffer tubes): Mil-Spec and Commercial. If you have a Commercial extension on your rifle, make sure to order the soon-to-be released Commercial ACS (MAG371). For help identifying which extension is on your rifle, please visit

www.magpul.com/tech/ctr.html

Made in USA

Features

• Mounts on Military Carbine Receiver Extension tube (Not included)
• Shielded release latch prevents snagging and accidental operation
• Premium chrome-silicon lock spring provides positive locking and long service life
• Supplemental friction lock eliminates accuracy robbing wobble*
• Sloping cheek weld provides a wide contact surface for user comfort
• Replaceable 0.30 Rubber Butt-Pad offers an anti-slip surface and increases impact protection
• Metal strike plate provides a hardened striking point on toe of stock
• 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
• Sling Mounts
• Mid - Optional QD Sling Mounts accommodate up to 1.5 push-button swivels (NOTE: QD Sling Mount Sockets are sold separately.)
• Rear / Bottom - 1.00 sling loop

Optional Accessories**

• Extended Rubber Butt-Pad, 0.55
• Enhanced Butt-Pad, 0.70
• Push-button QD Sling Mount Sockets

 Specifications**

• ACS Military Carbine Stock (w/ Rubber Butt-Pad, 0.30)
• Weight, Stock: 0.86 lb.
• Weight, w/ Receiver Extension: 1.16 lb.
• Length, Stock: 7.93 in.
• LOP Adjustment Range: 3.3 in.
• LOP, M4 Collapsed: 11.45 in.
• LOP, M4 Extended: 14.75 in

** Specifications based on standard-length (flat-back) M4 Carbine Receiver Extension and may vary depending on tube manufacturer. Standard Rubber Butt-Pad, 0.30 weight: 0.09 lb. Optional Extended Rubber Butt-Pad, 0.55 (weight: 0.12 lb.) or Enhanced Butt-Pad, 0.70 (weight: 0.15 lb.) may be used with either Mil-spec or Commercial ACS stocks. Butt-pads are compatible with UBR, ACS, CTR and MOE carbine stocks.