Magpul STR Carbine Stock (Mil-Spec) - AR Stock with Storage
If you are looking for a drop-in replacement buttstock for your AR15/M16 carbine, check out the Magpul STR (Storage/Type Restricted) Carbine Stock. This buttstock works with mil-spec sized receiver extension tubes, and is a storage-capable version of the Magpul CTR. The STR has an improved cheek weld and two water-resistant battery tubes in a compact A-frame design made of reinforced polymer. The storage tubes are capable of storing up to two (2) CR123A or AA batteries, and are accessible from the rear in any stock position.
The Magpul STR features a shielded operation lever and supplemental friction locking system to prevent accidental operation and reduce excessive stock movement, allowing for better enhanced weapon stability and accuracy. A premium chrome-silicon lock spring provides positive locking and a long service life.
The STR provides two sling loops integrated into the buttstock, including a reversible push-button QD sling mount and rear/bottom 1.25” sling loops. The STR also includes a replaceable 0.30” rubber butt-pad for positive shoulder purchase. This prevents slippage, even when wearing body armor or modular gear.
Features & Benefits of the Magpul STR AR Stock with Storage:
- 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 AR 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
- Sling Mounts
- Rear Reversible QD swivel sling mount fits up to 1.5" push-button swivels (swivel not included)
- Rear/Bottom 1.25" sling loops
- Extended Rubber Butt-Pad, 0.55"
- Enhanced Rubber Butt-Pad, 0.70"
- Dual-side push-button QD Swivel 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.
- Weight: 0.77 lb.
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. 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 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.) or Enhanced Butt-Pad, 0.70" (weight: 0.13 lb.) may be used with either Mil-Spec or Commercial-Spec STR stocks.
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The distinction between inferior quality and premium AR Stock is undeniable. At MSP, we only offer AR15 Accessories from the most trusted brands like Magpul Stock. Buy with confidence that we stand behind the product we sell.
Customer Ratings & Reviews
Great AR15 Stock, Great Feel
I built an AR-15 carbine on a Bushmaster XM-15 lower receiver and a Colt upper receiver. I put a mid-length gas system/barrel on it and she cycles smoothly into the mil-spec buffer tube. But I decided against the standard collapsible stock and went with the Magpul STR. I like it because it has a battery compartment and they also make a nice cheek weld. It also comes with Quick Release mount points for my sling. Magpul makes a quality product, and it's highly durable. I dropped my weapon on a rooftop and had it fall 22 feet to the ground and land on the buttstock. When I picked it up, I cleared it and went right on using it. It showed nothing but a minor scuff on the pad. It did knock my Aimpoint slightly off zero. But that's all. The STR is super simple to install. Just pull the locking pin up with something to pry it up to clear the end of the buffer tube then slide it on and release the pin. It will work like any other adjustable stock, then. I like the locking mechanism on the adjuster which locks the stock in place and drastically limits the wiggle you get with most stocks. I liked this ar15 stock so much I bought three more for my other carbines. All of my ARs have Magpul stocks, now.
I got my magpul str stock for sale at MSP
The oversized cheek rest is super comfortable, and if your optic takes 123 batteries the storage compartments are super convenient. Well worth the money
AR stock with storage
I replaced the stock that came on my Blackheart International AR. The Magpul STR carbine stock Collapsible has a much better but plate than the meat tenderizer that it came with. The Magpul Stock STR Collapsible is wider and has better stability; this provides for better accuracy. I have been using this Stock for several months and have fired 2K rounds with it on. I also fired about 500 rounds with the stock that came on the AR 15. The results are very noticeable. The Magpul STR Stock is more comfortable, more stable, and provides for battery storage. On a coyote hunt using the stock but stock, I missed a coyote at 500 yards. On a hunt with the Magpul STR stock on I have not missed one coyote and have made a shot at 622 yards, not that I am anything special in accuracy, the rifle just is easier to use accurately.
Magpul str is my favorite stock
The STR is my favorite of all the Magpul stocks. Use it on My 300blk that I hunt with. Has good cheek weld and locks up solid. No rattle. I really like this stock.
AR stock with storage
Magpul stocks are among the best out there. One common problem is the lever releasing the pin that fits in the positional holes is a little short in its play. To get the stock on, you need a pry bar to retract the pin helpfully. The storage compartments offer good cheek weld. When I found out my Bushmasters were using Commercial grade receiver extensions, I was a little disappointed, to say the least! I swapped out my Commercial grade Bushmaster extensions for MilSpec Vltor receiver extensions and am glad I did. For those of you who don't know, commercial extensions are made of softer alloy. If there is to be any catastrophic failure, it would be at the junction of the Reciever extension and the receiver where the softer alloy and flatter profile threads would give way before the harder, cut, mil-spec threads. For 99% of people, this would not be a problem. If you are going to the dirt with your hand on the heel of the but, as they taught in Basic, there's a potential failure looming.
The Magpul str stock is a Great Affordable Stock
The Magpul str stock fits tight on my rifle's tube, no wiggle once locked in. Very comfortable, the storage area makes for much better cheek weld than standard stock. Not too heavy. Installing is a bit of challenge; the plastic bullet/tool didn't lift the lock at all, had to use a screwdriver.
An AR-15 stock with battery storage
The Magpul STR carbine stock has the best feeling cheek welds of any AR-style collapsible stock. The friction lock takes virtually all the wiggle out of stock. Showed a buddy, and he had to have one for his AR-10 pattern deer rifle. I use the storage tubes for batteries mostly, but my buddy wanted to store a lens cloth. The plugs that close off the tubes in the Magpul str stock have smaller caps, and we were able to save a small lens cloth in the plug, leaving the tube free and clear for batteries or other accessories. Thanks to Brownells for fast, free shipping and great pricing, as always. Received this shipment in 5 days (including Saturday and Sunday) to central Southside Virginia.
Awesome AR stock!
Awesome AR stock! Excellent cheek weld like Vltor/ACS but smooth like the ACS. Quick detach points on either side (package comes with one QD female mount that you can take off to remount on the opposite side if desired). The Magpul STR includes a standard with 0.30" Magpul buttpad and Magpul Dummy 5.56 round and instructions on how to use it to aid in installation. Locks down tight with the added friction lock lever, unquestionably worth the money.
Looks great! Works great!
Solid! Looks great with my FDE AR-10. Cheek rests comfortably in the perfect position for the scope. When locked in place, it doesn’t budge.
Excellent stock and cheek weld like Vltor/ACS but smoother like the ACS. Quick detach points on either side (the box comes with one QD female mount that you can remount on the opposite side if you wish). Comes standard with 0.30" Magpul buttpad and Magpul Dummy 5.56 round and instructions on how to use it to aid in installation. Clamps down tight with the extra friction lock lever, unquestionably worth the money. Also, MSP had super fast shipping, I will be back for more AR accessories.