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Magpul ACS Stock
Premium AR-15 Carbine Stock with Built-In Storage & Enhanced Cheek Weld
Built for Durability. Designed for Comfort. Ready for Anything.
The Magpul ACS Stock (Adaptable Carbine/Storage) is a premium mil-spec carbine stock that delivers everything a serious shooter needs: comfort, strength, and smart storage. Whether you're running a duty rifle, a competition build, or a field-ready AR-15, the ACS provides a stable shooting platform and mission-ready functionality — without the added weight of full-featured stocks.
Key Features of the Magpul ACS Stock
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✅ Enhanced Cheek Weld – Wide, sloped cheek rest provides consistent eye alignment for optics or irons
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✅ Integrated Storage – Two sealed tubes (for batteries, tools, or earplugs) + rear compartment
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✅ Tool-Free Adjustability – 6-position mil-spec receiver compatibility
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✅ Frustration-Free Fit – Anti-rattle tensioner reduces wobble
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✅ Rugged Magpul Polymer – Weather-resistant, drop-tested, field-proven
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✅ Rubber Buttpad – Helps reduce recoil and improves shoulder grip
🔍 Compare: Magpul ACS vs ACS-L vs STR
| Model | Weight | Storage Tubes | Cheek Weld | Best Use |
|---|---|---|---|---|
| ACS | 14.0 oz | ✅ Dual tubes | Full + rear storage | Tactical / Utility builds |
| ACS-L | 10.3 oz | ❌ None | Slimmer | Lightweight, minimalist builds |
| STR | 12.3 oz | ✅ Dual tubes | Wider | Enhanced balance, great for optics |
💡 The ACS offers the most utility and storage — ideal for shooters who want gear on-board without extra pouches.
Installation & Compatibility
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Fits Mil-Spec AR-15 carbine buffer tubes (not commercial tubes)
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Compatible with AR-15, M4, and similar platforms
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Requires no gunsmithing — drop-in installation with standard tools
Who Should Use the Magpul ACS Stock?
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Tactical & law enforcement shooters – Add mission-critical storage and cheek weld for optics
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3-Gun & competitive shooters – Consistent eye relief under time pressure
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Prepared rifle owners – Store batteries, tools, and essentials directly in your stock
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Recreational AR builders – Premium quality, Magpul reliability
Why Buy from Mounts Plus?
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✅ Authorized Magpul Dealer
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✅ Real-time inventory and fast U.S. shipping
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✅ Competitive pricing on all stocks & AR upgrades
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✅ 30+ years serving shooters & builders
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✅ Expert customer service ready to help
What’s Included
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1x Magpul ACS Stock (Mil-Spec)
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Pre-installed rubber buttpad
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Integrated storage caps
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Mounting instructions
Frequently Asked Questions
Q: Is this compatible with commercial buffer tubes?
A: No — this version fits only mil-spec carbine buffer tubes. A commercial version is available separately.
Q: Can I store CR123 or AA batteries in the stock?
A: Yes. The sealed tubes are ideal for batteries, small tools, or even earplugs.
Q: What’s the main difference between the ACS and ACS-L?
A: The ACS-L removes storage compartments and slims down the profile to save weight — great for lightweight builds.
Q: Will this stock rattle or wobble?
A: The ACS includes a friction lock system that reduces movement for a tight, solid feel.
💬 Summary
The Magpul ACS Stock is more than a simple buttstock — it's a modular upgrade that brings comfort, consistency, and convenience to your AR-15. With sealed storage, an enhanced cheek weld, and Magpul’s trusted build quality, this is a smart choice for any serious rifle owner.
Upgrade your rifle with the Magpul ACS Stock — in stock now and shipping fast from Mounts Plus.