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Questions & Answers
will a 18650 battery fit? they are the same length as two cr123s but slightly larger diameter. Expert Answer

Magpul states their STR Mil-Spec Carbine Stock will accommodate up to two (2) CR123A lithium or AA batteries. I would recommend contacting Magpul directly regarding compatibility with other batteries.

by Ethan, Gear Expert, October 25, 2023
Does the qd attachment work on both sides? Some stocks I've read about the qd doesn't stay attached on the outside (for right handed shooters). Expert Answer

The QD sling mount's are at the rear of the stock and on both sides.

by Patrick, Gear Expert, September 23, 2021
Customer Reviews
Helpful Positive Review
Almost perfect! by Al, January 17, 2017
Upon opening the box, the stock has some polymer from where it was manufactured. No big deal. Magpul supplied a dummy round for installation. DO NOT USE THE SUPPLIED DUMMY ROUND. Use a screwdriver and pry the small "lock"? bar up. The cheek weld is 1...
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14/17 found this helpful
Helpful Positive Review
That this company is clearly driven to be the leading edge in imagination, design, and understanding of the rifle, the people who use it, and what they need from it. This stock is an example of all this, it does its job quite well and the areas of r...
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5/5 found this helpful
Helpful Positive Review
I ordered a PSA complete lower and it came with the Magpul STR stock.I ordered 2 more complete lowers and one came with the MOE MAGPUL $35 stock.I ordered a Stealth Grey STR MAGPUL STOCK immediately as there is no comparison between those 2 Magpul st...
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3/3 found this helpful
Helpful Positive Review
Great Stock by RKAllen4, May 3, 2016
Fits great,fits well, but throw away the plastic bullet that comes with it. I used a flat bladed screwdriver to hold the spring down to install. You can look up the install procedure on youtube. Just search for Magpul STR install
1/1 found this helpful
Helpful Positive Review
Great butstock, great price! by David, Verified Owner, November 1, 2022
Magpul makes a lot of great furniture for various applications. I purchased this one for my AR9. Out of the box I noticed it had a great feel and balance. After installing I dropped my head against the check well and sighting was ever so easy. I have...
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1/1 found this helpful
Helpful Positive Review
This is my go to carbine stock by Taco-lover, Verified Owner, February 24, 2022
What's not to like about this stock? It has a comfortable cheek weld, battery storage, and it has the tension lever so it doesn't rattle. I've used this on every AR build I've done. I hope magpul never discontinues this product.
1/1 found this helpful
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Product Info for Magpul Industries STR Mil-Spec Carbine Stock

The Magpul Industries STR Mil-Spec Carbine Stock is a drop-in replacement stock for your favorite AR-15/M4 carbines using mil-spec receiver extension tubes. These AR15 Stocks by Magpul Industries feature two water-resistant battery storage tubes located on either side of the stock and are accessible in any stock position via a removable rubber plug. This Magpul Industries STR AR15/M4 Stock features a shielded operation lever and a supplemental friction locking system to prevent accidental operation and to minimize excessive movement providing enhanced weapon stability and accuracy. Incorporating two integral sling loops and a reversible push-button QD sling mount, this Magpul Rifle Storage Buttstock is a must have!image

Specifications for Magpul Industries STR Mil-Spec Carbine Stock:

Manufacturer: Magpul Industries
Gun Model: M4, AR-15
Gun Type: Carbine
Condition: New
Buffer Tube Size: Mil-Spec
Gun Make: AR Platform

Features of Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK:

  • 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 in 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
  • Rear - Reversible Type 1 Sling Mount fits up to 1.5 in push-button QD swivels swivel not included
  • Rear/Bottom - 1.25 in sling loops
  • 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 STR.

Package Contents:

  • Magpul Industries STR Mil-Spec Carbine Stock, 55-BSC-MSTRMS

Magpul Industries STR Mil-Spec Carbine Stock Orderable Models

List of Orderable Models

  • Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK , MPN: MAG470-BLK , UPC: 873750006239 , Code: 55-BSC-MSTRMS-MAG470BLK
  • Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE , MPN: MAG470-FDE , UPC: 873750006246 , Code: 55-BSC-MSTRMS-MAG470FDE
  • Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, OD Green MAG470OD , MPN: MAG470-ODG , UPC: 873750006260 , Code: 55-BSC-MSTRMS-MAG470OD
  • Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Gray MAG470GRY , MPN: MAG470-GRY , UPC: 873750008981 , Code: 55-BSC-MSTRMS-MAG470GRY

Magpul Industries STR Mil-Spec Carbine Stock Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK , MPN: MAG470-BLK-EDEMO , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-RE-C
  • USED, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK , MPN: MAG470-BLK-EDEMO , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-RE-B
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, OD Green MAG470OD, EDEMO5, Condition Parts Only/Salvage, Wrong Product , MPN: MAG470-ODG-EDEMO5 , Code: 55-BSC-MSTRMS-MAG470OD-EDEMO-WP-F
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO11, Condition Parts Only/Salvage, Wrong Product , MPN: MAG470-BLK-EDEMO11 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-WP-F
  • DEMO, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE , MPN: MAG470-FDE-DEMO , Code: 55-BSC-MSTRMS-MAG470FDE-DEMO
  • Demo,Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Gray , MPN: 1031237-DEMO , Code: 55-BSC-MSTRMS-MAG470GRY-DEMO
  • USED, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK , MPN: MAG470-BLK-EDEMO , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-SC-C
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO10, Used, Condition Like New , MPN: MAG470-BLK-EDEMO10 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO10
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO12, Condition Fair, Used , MPN: MAG470-BLK-EDEMO12 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-US-D
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, OD Green MAG470OD, EDEMO6, Used, Condition Fair , MPN: MAG470-ODG-EDEMO6 , Code: 55-BSC-MSTRMS-MAG470OD-EDEMO6
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO15, Used, Condition Fair , MPN: MAG470-BLK-EDEMO15 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO15
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, OD Green MAG470OD, EDEMO7, Used, Condition Fair , MPN: MAG470-ODG-EDEMO7 , Code: 55-BSC-MSTRMS-MAG470OD-EDEMO7
  • USED, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK , MPN: MAG470-BLK-EDEMO , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO-OT-U
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE, EDEMO3, Used, Condition Like New , MPN: MAG470-FDE-EDEMO3 , Code: 55-BSC-MSTRMS-MAG470FDE-EDEMO3
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE, EDEMO2, Excellent, Inspect and Rebox , MPN: MAG470-FDE-EDEMO2 , Code: 55-BSC-MSTRMS-MAG470FDE-EDEMO-RE-B
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO17, Used, Condition Good , MPN: MAG470-BLK-EDEMO17 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO17
  • USED, Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE , MPN: MAG470-FDE-EDEMO , Code: 55-BSC-MSTRMS-MAG470FDE-EDEMO-RE-A
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Gray MAG470GRY, EDEMO2, Used, Condition Fair , MPN: MAG470-GRY-EDEMO2 , Code: 55-BSC-MSTRMS-MAG470GRY-EDEMO2
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Black MAG470BLK, EDEMO9, Used, Condition Fair , MPN: MAG470-BLK-EDEMO9 , Code: 55-BSC-MSTRMS-MAG470BLK-EDEMO9
  • USED Magpul Industries STR Rifle Stock w/Storage, Fits AR-15/M4, Mil-Spec, Flat Dark Earth MAG470FDE, EDEMO4, Used, Condition Like New , MPN: MAG470-FDE-EDEMO4 , Code: 55-BSC-MSTRMS-MAG470FDE-EDEMO4
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