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The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Commercial-Spec Model is a drop-in replacement butt-stock for carbines using NON mil-spec receiver extension tubes (AKA “Commercial”). 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 Magpul CTR™, the ACS also features a supplemental friction lock system that minimizes 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 0.30″ thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec (1.14″ diameter) and commercial-spec (1.17″ diameter). If you have a mil-spec extension on your rifle, make sure to order the MILSPEC MAG370. Please see the “Related Info” section above to help determine which tube you have.

Made in U.S.A.

Features

  • Mounts on Commercial Carbine Receiver Extension tube (not included) from manufacturers such as Bushmaster, DPMS, RRA, Olympic, and others
  • Supplemental friction lock minimizes accuracy robbing wobble*
  • Premium chrome-silicon lock spring provides positive locking and long service life
  • Sloping cheek weld provides a wide contact surface for user comfort
  • Shielded release latch prevents snagging and accidental operation
  • Replaceable 0.30″ Rubber Butt-Pad offers an anti-slip surface and increases impact protection
  • Compatible with Magpul ASAP® and other receiver-mount sling attachments
  • 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 Mount accommodates up to 1.5″ push-button swivels (NOTE: QD Sling Mount Sockes are sold seperately.)
    • Rear/Bottom – 1.00″ sling loop

Optional Accessories**

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

Specifications**

  • ACS, Commercial-Spec Carbine Stock (w/ Rubber Butt-Pad, 0.30″)
  • Weight, Stock: 0.86 lb.
  • Weight, w/ Rec. 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.

* Friction lock performance may vary depending on the receiver extension’s dimensional tolerances. 

Specifications

Colors

Black

Platform

AR15

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Magpul ACS Carbine Commercial-Spec Stock – Black

View price in cart
Magpul ACS Carbine Commercial-Spec Stock - Black $83.00
  • MSRP$94.95
  • SKUSTKMAG371BLK
  • MPNMAG371-BLK
  • UPC873750001043
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Total in stock: 7

Frequently Bought Together

Magpul ACS Carbine Commercial-Spec Stock - Black Commercial Buffer Tube Kit
Price for both:
$123.00

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