Specna Arms M4/M16 Adjustable Tactical Stock Tan



The Specna Arms M4/M16 Adjustable Tactical Stock Tan is an adjustable telescopic stock for compatible M4, M16 and AR15 airsoft replicas. The stock is made from sturdy polymer and combines a relatively slim design with a rubber shoulder pad and attachment points for various sling configurations.
Measuring approximately 19 cm in length and weighing around 290 grams, this is an interesting replacement stock for players who wish to modify their existing M4/M16 or put together a custom build. Thanks to its adjustable design, the distance between the stock and the replica can be adjusted to suit the user’s build, equipment and personal shooting stance.
Adjustable stock for M4/M16 platforms
The telescopic design allows you to adjust the position of the stock along a compatible M4/AR15-type buffer tube. This enables you to set the replica to a more compact configuration for CQB or transport, or to extend the stock further when a longer shoulder position is more comfortable.
The ideal setting is a personal choice. Body height plays a part in this, as does the use of, for example, a plate carrier or chest rig. If you’re wearing bulkier gear on your chest, a shorter stock position may be more comfortable than when playing without such gear.
Polymer construction with rubber butt pad
The main body of the stock is made from polymer. This ensures that the construction remains relatively light, whilst still being suitable for the normal, intensive use of an airsoft replica.
On the rear there is a hard rubber butt pad. The rubber provides a better grip against clothing or equipment than a completely smooth plastic rear surface and ensures a clear point of contact against the shoulder.
The design also features sloping side panels against which the cheek can rest whilst aiming. This type of design is inspired by well-known Crane/SOPMOD-style stocks, but this Specna Arms version has a relatively slim construction.
QD attachment points on both sides
There is a QD sling socket on both the left and right-hand sides. This allows a suitable QD sling swivel to be fitted on the desired side, depending on the sling configuration and the user’s preference.
As well as the QD fittings, the design features conventional sling slots. This means you are not limited to using a QD swivel, and the stock can also be used with certain traditional sling set-ups.
No internal battery compartment
An important point to note about this model is the battery compartment. Despite its Crane-style design, this version does not have large internal side compartments for an AEG battery.
With a rear-wired M4 AEG, the battery must therefore be placed in the buffer tube or another suitable battery compartment. Before purchasing, check the dimensions of your battery and the available space in the replica. A battery that fits into a traditional Crane stock will not necessarily fit into this slimmer configuration.
For GBBR platforms, battery space is obviously not an issue, but mechanical compatibility with the buffer tube used must still be checked.
Tan for tactical and two-tone builds
The Tan finish makes this stock suitable for replicas finished entirely in earth tones, as well as for popular two-tone configurations where a black receiver is combined with Tan accessories.
Tan, FDE, Coyote and similar colour designations are not fully standardised. An exact colour match with handguards, pistol grips, magazines or other parts from different manufacturers cannot therefore be guaranteed.
Airsoft, CQB en milsim
The adjustability is useful for different types of airsoft. During CQB, a shorter setting can help you hold the replica more snugly against your body, whilst a more extended position can provide a more comfortable shoulder position during outdoor skirmishes.
Adjustability is also useful in milsim, particularly when playing whilst wearing a plate carrier or other bulkier kit. The QD sockets on both sides also make it easier to tailor the sling configuration to the rest of the loadout.
Practical insights
The Specna Arms M4/M16 Adjustable Tactical Stock Tan is particularly interesting as a replacement stock or as part of a custom M4/AR15 build. Don’t just look at the appearance, though. The combination of your buffer tube, magazine configuration and sling will ultimately determine whether this stock is suitable for your setup.
Before fitting, check which type of buffer tube is fitted to your replica and do not assume that every M4/M16-style replica will have exactly the same fit. Manufacturing tolerances and different buffer tubes can affect how much play the stock has and how smoothly it adjusts.
If you’re using a rear-wired AEG, be sure to check the battery compartment. This stock does not have spacious internal Crane-style battery compartments. A compact LiPo battery that fits inside the buffer tube is therefore usually a more sensible choice.
Who is the Specna Arms M4/M16 Adjustable Tactical Stock (Tan) suitable for?
The Specna Arms M4/M16 Adjustable Tactical Stock Tan is ideal for airsoft players looking for an adjustable replacement stock for a compatible M4, M16 or AR15 replica. The combination of a polymer construction, rubber buttplate and sling attachment points makes it suitable for both standard skirmishes, CQB and milsim.
The Tan version is also of interest for custom builds that combine black and Tan parts. For rear-wired AEGs, it is particularly suitable when the chosen battery can actually be fitted inside the buffer tube.
Specificaties
- Merk: Specna Arms
- Product: M4/M16 Adjustable Tactical Stock
- Product type: Adjustable telescopic pole
- Platform: M4 / M16 / AR15-type airsoft replica's
- Design: Telescopic / adjustable
- Material stock: Polymer
- Buttpad: Hard rubber
- QD-sling sockets: Ja
- QD sling socket position: Left and right
- Conventional sling slots: Yes
- Internal battery compartment: No
- Battery storage in rear-wired AEGs: Depends on the space available in the buffer tube
- Length: Approximately 19 cm
- Height: Approximately 12.5 cm
- Width: Approximately 5 cm
- Weight: approximately 290 g
- Colour: Tan
- Application: Airsoft
Common mistakes
- Don’t assume that every M4/M16 replica uses exactly the same buffer tube and fitting.
- Check that it is compatible with the buffer tube before purchasing the stock as an upgrade.
- Do not confuse the Crane-style design with a traditional, spacious Crane battery stock; this version does not have large internal battery compartments.
- If you have a rear-wired AEG, check beforehand that the battery actually fits inside the buffer tube.
- Do not force the stock over a buffer tube if the fit is clearly incorrect.
- After fitting, check that the stock locks correctly into the available adjustment positions.
- Use a suitable QD sling swivel if you wish to use the QD sockets.
- Do not expect Tan to be exactly the same shade as any FDE, Coyote or Tan part from another manufacturer.
Frequently Asked Questions
Which airsoft replicas is this stock designed for?
The stock is designed for compatible M4, M16 and AR15-type airsoft replicas with a suitable buffer tube.
Is the stock adjustable?
Yes. It is a telescopic stock that can be adjusted to various positions along a compatible buffer tube.
Is the stock made of metal?
No. The main body is made of sturdy polymer.
Does the stock have a rubber rear end?
Yes. There is a hard rubber butt pad at the rear for extra grip against the shoulder or equipment.
Can I attach a QD sling?
Yes. There is a QD sling socket on both the left and right sides for a suitable QD sling swivel.
Can I also use a conventional sling?
As well as the QD sockets, the design features sling slots that allow for certain traditional sling configurations.
Does this stock have space for a battery?
The stock itself does not have spacious internal battery compartments like a traditional Crane battery stock. With a rear-wired AEG, a suitable battery must be placed in the available buffer tube or another space intended for that purpose.
Will any LiPo battery fit in the buffer tube?
No. Batteries vary considerably in length, width and thickness. You should therefore always check the available internal space and the dimensions of the battery.
Is this stock suitable for a GBBR?
The stock may be suitable for compatible M4/AR15 GBBR configurations, but the actual fit depends on the buffer tube used. You should therefore check this in advance.
What are the dimensions?
The stated product dimensions are approximately 19 cm long, 12.5 cm high and 5 cm wide.
How much does the stock weigh?
The stated weight is approximately 290 grams.
Is Tan the same as FDE?
Not necessarily. Tan, FDE and Coyote may appear similar in shade, but colours can vary depending on the manufacturer, material and production batch.
The Specna Arms M4/M16 Adjustable Tactical Stock Tan combines an adjustable polymer construction with a rubber buttplate, quick-detach sling points on both sides and a slim design for compatible M4, M16 and AR15 airsoft replicas.

Product specifications
- Article number
- SPE-09-046716
- Weight unpackaged
- 290 gr
- Brand
- Specna Arms
- Type
- Adjustable telescopic walking stick
- Color
- Tan
- Spec
- Telescopic / adjustable














