The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Commercial-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using commercial-spec sized 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 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.

Made in U.S.A.


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

Features

• Mounts on commercial-spec sized carbine receiver extension tube (not included) from manufacturers such as Bushmaster, DPMS, Olympic, and others (please see the note below)
• 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 Sockets 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: 0.89 lb.
  • Weight, w/ Rec. Extension: 1.29 lb.
  • Length, Stock: 7.95 in.
  • LOP Adjustment Range: 3.80 in.
  • LOP, M4 Collapsed: 11.75 in.
  • LOP, M4 Extended: 15.55 in.

NOTE:

There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. If you have a mil-spec extension on your rifle, make sure to order the Mil-spec ACS.

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Commercial-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using commercial-spec sized 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 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.

Made in U.S.A.


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

Features same as Commerical ACS Black.

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Commercial-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using commercial-spec sized 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 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.

Made in U.S.A.


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

Features same as Commerical ACS Black.

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Commercial-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using commercial-spec sized 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 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.

Made in U.S.A.


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

Features same as Commerical ACS Black.

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec sized 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 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.

Made in U.S.A.


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

Features

• Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, S&W, LMT, and others (please see the note below)
• 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 Sockets 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, Mil-Spec Carbine Stock (w/ Rubber Butt-Pad, 0.30")
  
  • Weight, Stock: 0.89 lb.
  • Weight, w/ Rec. Extension: 1.19 lb.
  • Length, Stock: 7.95 in.
  • LOP Adjustment Range: 3.25 in.
  • LOP, M4 Collapsed: 11.75 in.
  • LOP, M4 Extended: 15.00 in.

NOTE:

There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. If you have a commercial-spec extension on your rifle, make sure to order the Commerical Spec ACS.

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec sized 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 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.

Made in U.S.A.


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

Features same as Mil-spec ACS Black

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec sized 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 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.

Made in U.S.A.


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

Features same as Mil-spec ACS Black

The patent-pending Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec Model is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec sized 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 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.

Made in U.S.A.


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

Features same as Mil-spec ACS Black

NTOA (National Tactical Officers Association) tested and recommended.

Includes a tube assembly.

Six-position collapsible stock with rubber non-slip recoil pad and skeletonized design features a Picatinny rail and storage compartment for CR123 batteries (4 total) or other small items. Ambidextrous design is easily achieved by switching the battery compartment lid and Picatinny rail. Two ultrasonically welded metal inserts allow for the addition of optional quick release sling adaptors (PBSS).

» Ambidextrous side snap-tight latch compartment provides storage for 4 CR123 batteries
» Side Picatinny rail allows addition of Adjustable Cheek Piece (ACP) or Mag Holder (MPS)
» Rubber non-slip buttpad with tapered angle, allows faster shouldering and increased comfort with body armor
» 2 ultrasonically welded metal quick release sling mount points
» Commercial Tube

Includes a tube assembly: buffer tube, buffer, buffer spring, lock nut and latch plate.

The CBST is needed to convert a fixed stock or rifle stock to a collapsible (telescoping) stock.

Default color choice is black. Tan and Green are available and in stock ready to ship. If you want tan or green specify color on order comments.

Feel free to ask all the question you have. We take the time to answer them all!