Magpul STR Carbine Stock – Mil-Spec

The Magpul STR (Storage/Type Restricted) Carbine Stock – Mil-Spec is a drop-in replacement buttstock for AR15/M4 carbines using Mil-Spec sized receiver extension tubes. A storage-capable version of the CTR®, the STR has improved cheek weld and two water resistant battery tubes on a compact, reinforced polymer A-frame design.

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The Magpul STR (Storage/Type Restricted) Carbine Stock - Mil-Spec is a drop-in replacement buttstock for AR15/M4 carbines using Mil-Spec sized receiver extension tubes. A storage-capable version of the CTR®, the STR has improved cheek weld and two water resistant battery tubes on a compact, reinforced polymer A-frame design.

A shielded operation lever and supplemental friction locking system prevent accidental operation and minimize excessive stock movement for enhanced weapon stability and accuracy.* The STR incorporates two integral sling loops, a reversible push-button QD sling mount, and a replaceable 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

Made in the USA.

MULTI-USE AR STOCK

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)

WATER-RESISTANT STORAGE

Two water-resistant battery storage tubes located on the left and right sides. Each tube will store up to two (2) CR123A lithium or AA batteries. Tubes are accessible from the rear in any stock position via a hand-removable rubber plug

SHIELDED RELEASE LATCH

Prevents snagging and accidental operation. Supplemental friction lock minimizes accuracy-robbing wobble*

THE RIGHT BALANCE OF CHEEK WELD AND COMFORT

Sloping cheek weld combines a slim profile with user comfort

AIMPACT MITIGATION

Replaceable 0.30" Rubber Butt-Pad offers an anti-slip surface and increases impact protection

SLING POINT VARIETY 

Compatible with Magpul ASAP®ASAP® QD and other receiver-mount sling attachments

Sling Mounts:

Rear - Reversible Type 1 Sling Mount fits up to 1.5" push-button QD swivels (swivel not included)

Rear/Bottom - 1.25" sling loops

LONG LASTING ADJUSTABILITY

Premium chrome-silicon lock spring provides positive locking and long service life

Other Specs * 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.

NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): Mil-spec and Commercial-Spec.

Additional information

Color

Black, Flat Dark Earth (FDE)

The Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec Model is a drop-in replacement buttstock for AR15/M4 carbines using mil-spec sized receiver extension tubes. Dual, rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock provides multiple storage options.

Similar to the Magpul CTR®, the ACS also features an anti-snag release latch to prevent accidental activation along with a supplemental friction lock system that minimizes excessive stock movement for enhanced weapon stability and accuracy*. 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.

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)
  • Sloping cheek weld provides a wide contact surface for user comfort
  • 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
  • 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®, ASAP® QD, and other receiver-mount sling attachments
  • Sling Mounts
    • Mid – Included reversible Sling Mount Kit – TYPE 3 fits up to 1.5″ push-button swivels (swivel not included)
    • Rear/Bottom – 1.00″ sling loop

NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. This is the mil-spec model.