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Magpul MAG1377FDE DT Carbine Stock Flat Dark Earth Synthetic for AR-15, M16, M4 with Mil-Spec Tube (Tube Not Included)
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$66.99
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SKU: MAG1377FDE-840815147558
Overview
Built as a drop-in buttstock for AR-15, M16, and M4 carbines using a Mil-Spec profile receiver extension, this stock is aimed at shooters who want a secure, adjustable setup without added complexity. Its dual tensioning design and auto-engaging friction lock are intended to keep the stock tight on the buffer tube while still allowing quick length-of-pull changes. The ambidextrous adjustment lever, rotation-limiting QD sling mount, and 1.25 footman’s loop add practical flexibility for field use and range work. Tube not included, so it fits into existing compatible setups rather than serving as a complete assembly.
Why Hunters Choose the Magpul
Drop-in Replacement
Mil-Spec profile receiver extensions
Dual Tensioning
Technology adds extra lockup and
Auto-engaging Friction
Lock supports quick, smooth length-of-pull
Ambidextrous Adjustment
Lever suits left- or right-handed
Includes Rotation-limiting
QD sling mount and 1.25
Key Features
- Drop-in replacement buttstock for AR15/M16/M4 carbines with Mil-Spec profile receiver extensions.
- Dual tensioning technology adds extra tension on the buffer tube for a tighter lockup.
- A-frame style stock with auto-engaging friction lock for easy adjustment.
- Ambidextrous adjustment lever supports left- or right-handed use.
- Includes a rotation-limiting QD sling mount and 1.25 footman’s loop.
- Non-slip butt-pad combines SL footprint with CTR-inspired curvature.
- Length of pull is adjustable; tube is not included.
Best Used For
- AR-15, M16, or M4 owners using a Mil-Spec receiver extension and wanting a drop-in stock replacement.
- Hunters who need quick, smooth length-of-pull adjustments during changing field positions.
- Users prioritizing a tighter lockup and added stability on a rugged carbine setup.
- Left- or right-handed shooters who want an ambidextrous adjustment lever.
- Shooters planning to use QD slings or a footmans loop for carry and setup flexibility.
Specifications
| Adjustment Lever | Ambidextrous |
|---|---|
| Butt Pad | Non-slip butt-pad |
| Color | Flat Dark Earth |
| Compatibility | AR15/M16/M4 carbines or comparable platforms equipped with Mil-Spec profile receiver extensions |
| Firearm Type | AR Platform |
| Footmans Loop | 1.25 footman's loop |
| Length Of Pull | Adjustable |
| Locking Feature | Auto-engaging friction lock |
| Material | Synthetic |
| Sling Mount | Rotation-limiting QD sling mount |
| Stock Type | A-frame style carbine stock |
| Tensioning Technology | Dual tensioning technology |
| Tube Included | No |
| Tube Not Included | Yes |
| Tube Requirement | Mil-Spec profile receiver extensions |
Pros
- Drop-in replacement for AR15/M16/M4 carbines with Mil-Spec profile receiver extensions.
- Dual tensioning technology adds extra lockup and helps reduce stock movement.
- Auto-engaging friction lock supports quick, smooth length-of-pull adjustments.
- Ambidextrous adjustment lever suits left- or right-handed use.
- Includes a rotation-limiting QD sling mount and 1.25 footman's loop.
- Non-slip butt-pad design combines SL footprint with CTR-inspired curvature.
Considerations & Trade-offs
- Requires a Mil-Spec profile receiver extension; it is not a universal stock for all AR-pattern setups.
- Tube is not included, so the receiver extension must be sourced separately.
- The auto-engaging friction lock and dual tensioning system add security, but they also make this a more specialized adjustment system than a basic carbine stock.
- Features such as the QD sling mount and footmans loop are useful, but sling attachment options still depend on how the rifle is set up overall.
Suggested Comparisons
- AR-15/M4 carbine stocks
- Mil-Spec receiver extensions
- Adjustable buttstocks
- QD sling mounts
Suggested Accessories
- Carbine receiver extension
- QD sling swivel
- Sling
Frequently Asked Questions
What platforms is the Magpul DT Carbine Stock made for?
It is a drop-in replacement buttstock for AR15/M16/M4 carbines, or comparable platforms, that use Mil-Spec profile receiver extensions.
Does this stock include the receiver extension or tube?
No. The product data states that the tube is not included.
What adjustment features does the DT Carbine Stock offer?
It has an ambidextrous adjustment lever and adjustable length of pull. The description also says the adjustment is quick and smooth.
What sling attachment options are listed?
The listed features include a rotation-limiting QD sling mount and a 1.25 footman’s loop.
What should I know about the lockup on this stock?
The description says it uses dual tensioning technology and an auto-engaging friction lock to provide extra tight lockup and minimize movement between the stock lock pin and receiver extension.