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Magpul CTR® Carbine Stock – Mil-Spec Model

Magpul CTR® Carbine Stock – Mil-Spec Model
Item# MAG-310-
Regular price: $79.95
Sale price: $75.95
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Magpul CTR® Carbine Stock – Mil-Spec ModelMagpul CTR® Carbine Stock – Mil-Spec ModelMagpul CTR® Carbine Stock – Mil-Spec Model


The Magpul CTR (Compact Type Restricted) Carbine Stock, Mil-Spec model (MAG-310) is a polymer buttstock which features a unique design with a 3-1/2" length of pull adjustment. Requires the use of a mil-spec carbine-length extension tube, buffer and spring (sold separately). The stock also features a friction lock system which eliminates play and creates a solid link between the stock and the extension tube.

The Magpul CTR (Compact/Type Restricted) – Mil-Spec Model is a drop-in replacement buttstock for AR15/M16 carbines using mil-spec sized receiver extension tubes. Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. The CTR also features a supplemental friction lock system that minimizes excessive stock movement for enhanced weapon stability* and an ambidextrous QD sling mount that will accept any push-button sling swivel. The Mil-Spec Model includes a standard 0.30" rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

Made in U.S.A.


  • 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*
  • Sloping cheek weld combines a slim profile with user comfort
  • Shielded release latch prevents snagging and accidental operation
  • Premium chrome-silicon lock spring provides positive locking and long service life
  • Side mounting slots accept optional cheek risers for NON-AR15/M16 applications
  • Removable 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
  • Rear - Push-button QD swivel sling mount accommodates up to 1.5" swivels (ambidextrous)
  • Rear/Bottom - 1.25" sling loops
  • Toe - Lanyard hole for custom para-cord rigs


  • Optional Acessories
  • nded Rubber Butt-Pad, 0.55"
  • Enhanced Rubber Butt-Pad, 0.70"
  • k Risers (0.25", 0.50", 0.75" for NON-AR15/M16 applications)


  • ***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 CTR. Please see the "Related Info" section above to determine which tube you have. If you happen to have one of the uncommon military tubes with an extended slant-back, along with the Mil-Spec CTR you will also need to order the Extended Rubber Butt-Pad, 0.55" (sold separately).

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



  • Weight: 0.55 lb.
  • Weight, w/ Rec. Extension: 0.80 lb.
  • Length, Maximum: 6.90 in.
  • LOP Adjustment Range: 3.25 in.
  • LOP, M4 Collapsed: 10.70 in.
  • LOP, M4 Extended: 13.95 in.


  • Specifications based on standard-length (flat-back) M4 Carbine receiver extension and may vary depending on tube manufacturer.
  • Standard Rubber Butt-Pad, 0.30" weight: 0.08 lb.
  • Optional Extended Rubber Butt-Pad, 0.55" weight: 0.11 lb.
  • Optional Enhanced Rubber Butt-Pad weight: 0.13 lb.