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)
Sloping cheek weld provides a wide contact surface for user comfort
Storage compartment in tail of stock with positive latching access door on right hand side
Supplemental friction lock minimizes accuracy robbing wobble*
Shielded release latch prevents snagging and accidental operation
Premium chrome-silicon lock spring provides positive locking and long service life
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
Sling Mounts
Mid – Included reversible QD Swivel Sling Mount fits up to 1.5″ push-button swivels (swivel not included)
Rear/Bottom – 1.00″ sling loop


ACS-L, Mil-Spec (stock configuration)
Weight: 0.78 lb.
Weight, w/ Rec. Extension: 1.02 lb.
Length, Maximum: 7.95 in.
Width, Maximum: 2.17 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 Commercial-Spec ACS-L.

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

** Specifications based on standard-length (flat-back) M4 Carbine Receiver Extension and may vary depending on tube manufacturer.
Standard Rubber Butt-Pad, 0.30″ or the optional Extended Rubber Butt-Pad, 0.55″ and Enhanced Butt-Pad, 0.70″ may be used with either Mil-Spec or Commercial-Spec ACS-L stocks.

Magpul ACS-L™ Carbine Stock (Mil-Spec)


The Magpul ACS-L (Adaptable Carbine Stock – Light) is a drop-in replacement buttstock for AR15/M16 carbines using mil-spec sized receiver extension tubes. A streamlined version of the ACS, the ACS-L utilizes the same center storage compartment and cheek weld but removes the battery tubes for a slimmer, lighter weight package.


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