Magpul Str Carb Stk Mil-spec Gry
Magpul Industries
$80.70
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Magpul Industries
Magpul Str Carb Stk Mil-spec Gry
The Magpul STR Carbine Stock in Mil-Spec Gray is a premium, storage-capable drop-in buttstock engineered for AR-15/M4 carbines running mil-spec diameter receiver extension tubes, delivering rock-solid stability, improved ergonomics, and mission-ready versatility in a durable polymer build made in the USA.
- Drop-in fit for mil-spec sized AR-15/M4 carbine receiver extension tubes
- Two water-resistant battery/storage tubes keep essentials close at hand
- Shielded locking lever and friction lock prevent accidental stock movement
- Enhanced A-frame design provides improved cheek weld for better sight alignment
- Reversible push-button QD sling mount plus two integral sling attachment loops
- Replaceable 0.30" rubber butt-pad grips securely even over body armor or gear
Who This Is For
The Magpul STR is ideal for AR-15 owners, competitive shooters, and tactical users who demand more than a basic collapsible stock — particularly those who want integrated storage, a more stable lockup, and sling-mounting flexibility without sacrificing the compact profile of a standard carbine stock. It's equally well-suited for home defense builds and range rifles where a secure, no-rattle fit makes a meaningful difference in handling and accuracy.
Specifications
| Brand | Magpul Industries |
|---|---|
| Model | STR Carbine Stock |
| Color / Finish | Mil-Spec Gray |
| Tube Compatibility | Mil-Spec diameter receiver extension |
| Platform | AR-15 / M4 Carbine |
| Butt-Pad Thickness | 0.30 inches (replaceable rubber) |
| Storage Tubes | 2 × water-resistant battery/storage tubes |
| Sling Mounts | Reversible QD push-button + 2 integral sling loops |
| Locking System | Shielded lever + supplemental friction lock |
| Material | Reinforced polymer A-frame construction |
| Country of Origin | Made in the U.S.A. |
Frequently Asked Questions
Will the Magpul STR fit my AR-15 if it currently has a mil-spec buffer tube?
Yes. The Magpul STR is specifically designed for mil-spec diameter receiver extension (buffer) tubes, which are the most common tube standard on AR-15 and M4-pattern rifles. It is not compatible with commercial-spec (slightly larger diameter) tubes. If you're unsure which tube your rifle uses, measure the outer diameter — mil-spec tubes measure approximately 1.14 inches in diameter, while commercial tubes measure approximately 1.17 inches.
What is the difference between the Magpul STR and the Magpul CTR stock?
The STR (Storage/Type Restricted) is essentially a storage-enhanced evolution of the popular CTR. Both stocks share the same friction locking system and shielded lever for a rattle-free lockup, but the STR adds two water-resistant battery/storage compartment tubes and a slightly wider cheek weld profile. The tradeoff is a marginally wider footprint, but users who value the extra storage and enhanced cheek weld consistently prefer the STR for duty and range use.
What kind of items can be stored in the STR's storage tubes?
The two water-resistant storage tubes built into the STR are sized to accommodate standard CR123A batteries, AAA batteries, or similarly dimensioned items such as fire-starting tools, rolled currency, or small survival essentials. The water-resistant seals help protect stored items from moisture during field use, making the STR a practical choice for outdoor and tactical applications where on-board storage can be critical.
