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ACS™ M4 Carbine Collapsible Butt-Stock – Mil-Spec Version
The patent-pending 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 |
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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
- 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
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