Magpul STR Carbine Stock – Mil Spec AR-15 – MAG470

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The Most Comprehensive Stock on the Market – Great Value for Your Money

Upgrade your rifle with the most comprehensive stock on the market. The Magpul STR Carbine Stock – Mil-Spec is a great-value replacement buttstock for AR15/M16 carbines using mil-spec sized receiver extension tubes.  Built with extra storage and other features that will truly improve your shooting experience in any situation.

The Magpul STR Carbine Stock has a shielded operation lever and supplemental friction locking system to prevent accidental operation and minimize excessive stock movement for enhanced weapon stability and accuracy.

Magpul STR Carbine Stock - Mil Spec AR-15 - MAG470

Storage-Capable Version Of The CTR

The Magpul STR Carbine Stock is a storage-capable version of the CTR Carbine Stock. It has an improved cheek weld and two water-resistant battery tubes on a compact located on the opposite sides of the stock.

The STR incorporates two integral sling loops, a reversible push-button QD sling mount, and a replaceable 0.30″ rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

Magpul STR Carbine Stock - Mil Spec AR-15 - MAG470


  • 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)
  • Two water-resistant battery storage tubes located on the left and right sides of the stock
  • 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
  • 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

Magpul STR Carbine Stock - Mil Spec AR-15 - MAG470

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

Optional Accessories:

  • Extended Rubber Butt-Pad, 0.55″
  • Enhanced Rubber Butt-Pad, 0.70″
  • Dual-side push-button QD swivel Type 2 Sling Mount


  • STR, Mil-Spec (stock configuration)
  • Weight: 0.77 lb.
  • Weight, w/ Rec. Extension: 1.02 lb.
  • Length, Maximum: 7.30 in.
  • Width, Maximum: 2.58 in.
  • LOP Adjustment Range: 3.25 in.
  • LOP, M4 Collapsed: 11.10 in.
  • LOP, M4 Extended: 14.35 in.


  • 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 Magpul STR Carbine Stock – Commercial Spec AR-15 – MAG471.
  • 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.
  • Made in the U.S.A.

Products available on this page:

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Magpul Warranty Information

If you ever experience an issue with a Magpul product at any time, regardless of where it was purchased, please contact us directly and we’ll do everything reasonable to help you.

To make a return, please take the following steps:

  • BEFORE returning any products, please contact us first to receive an RMA number (Return Merchandise Authorization) and prominently write it on the outside of the package. Packages will not be accepted without an RMA.
  • Include a note with your name, shipping address, phone number and email, RMA number, and reason for the return (including, if applicable, information about the firearm, ammunition, and usage environment for defective returns). Do not send ammunition.
  • Wrap the item with quality padding and place it in the original packaging or in an appropriate box for shipping.
  • A UPS shipping label will be provided in your shipment. If using the original packaging, remove or cover the original shipping label. Tape the preprinted return shipping label to the outside of the box. Drop package at an official or authorized UPS drop-off location.
  • All refunds will be applied to the credit card used for the original purchase. You should allow one to two billing cycles for the refund to appear on your statement.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 11 reviews
Nickolas Johnson

Cheek rest is jusssst right for me

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!

Mark Grabowski

Excellent price and a perfect fit

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!

Dustin Brown

Great price awesome products and a amazing staff to work with.

Thanks for sharing your feedback, Dustin. We're glad you're satisfied with your purchase. Cheers!

George Gabaldon
Looks good

Very pleased with the stock on my AR, I run the same stock on another AR and could not be more please. The stock looks good but functions the way it was intended for. The shipment time was amazing. Good job! AT 3 Tactical.

Good stock...'s on all of my builds. The cheek weld puts me right on sight every time, regardless of which optic is on the rifle. A little pricey here but, Angstadt was the only place I could find it.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!