Your shopping cart is empty.

  • Menu
  • (0) Cart

Magpul CTR Carbine Stock - Commercial Spec AR-15 - MAG311

2 reviews

You will receive fast, free shipping for all orders over $35

Shipping cost is $5.50 for orders under $35. We ship with UPS and USPS. 

Most orders ship out within 24 hours

You will receive tracking information immediately at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses.  

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you're dissatisfied with your purchase, in any way, please contact us at - we will do our best to make it right.

Product Options


The Magpul CTR (Compact/Type Restricted) – Commercial-Spec Model is a drop-in replacement buttstock for AR15/M16 carbines using commercial-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 Commercial-Spec Model includes an extended 0.55" rubber butt-pad to provide positive shoulder purchase and accommodates the longer, slanted back common to most commercial-spec tubes.

Made in U.S.A.


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*

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

Replaceable 0.55" Extended 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 Accessories**

Rubber Butt-Pad, 0.30"

Enhanced Rubber Butt-Pad, 0.70:

Cheek Risers (0.25", 0.50", 0.75" for NON-AR15/M16 applications)


CTR, Commercial-Spec (stock configuration)

Weight: 0.58 lb.

Weight, w/ Rec. Extension: 0.91 lb.

Length, Maximum: 7.15 in.

LOP Adjustment Range: 3.80 in.

LOP, M4 Collapsed: 10.95 in.

LOP, M4 Extended: 14.75 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 CTR. Please see the "Related Info" section above to determine which tube you have.

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

** Specifications based on extended-length (slant-back) commercial-spec carbine receiver extension and may vary depending on tube manufacturer.

Extended Rubber Butt-Pad, 0.55" weight: 0.11 lb.

Optional Rubber Butt-Pad, 0.30" (weight: 0.08 lb.) and Enhanced Rubber Butt-Pad, 0.70" (weight: 0.13 lb.) may ONLY be used with the uncommon standard-length (flat-back) commercial-spec carbine receiver extensions.

Recently Viewed Products