Quick answer
An A2 fixed buttstock is a classic, durable AR-15 stock that provides a stable cheek weld and solid shoulder contact. To install it, you'll need a buffer tube, buffer, spring, and a screw set (not included with the stock alone).
Why choose a fixed A2 stock over a collapsible one?
The A2 fixed buttstock offers a rigid, rattle-free platform that many shooters prefer for precision or long-range builds. Unlike collapsible stocks, it has no moving parts that can loosen over time, and it provides a consistent length of pull. However, it does not adjust for different body types or thick clothing, so consider your primary use case before committing.
What you need before you start
The A2 Buttstock Black A2 Fixed Stock from Star Tactical Supply is sold as the stock only. You must supply the buffer tube, buffer, buffer spring, and the upper buffer tube screw. Many builders pair it with a rifle-length buffer tube (often called an A2 or rifle buffer tube) and a standard rifle buffer and spring. Without these parts, the stock cannot be mounted.
Decision rules for installing an A2 fixed buttstock
- Confirm your buffer tube type: You need a rifle-length buffer tube (also called an A2 buffer tube). Carbine or pistol tubes will not work with this stock.
- Gather all required parts: You will need: buffer tube, buffer, buffer spring, and the upper buffer tube screw (often called the A2 stock screw). The stock itself does not include these. Check your parts kit or order them together to avoid delays.
- Install the buffer tube assembly first: Thread the buffer tube into the lower receiver, install the buffer and spring, then screw on the A2 stock. Tighten the stock screw securely but do not overtighten. Use a torque wrench if available; typical spec is 35-40 in-lbs for the buffer tube castle nut (if applicable).
- Test function before final assembly: Cycle the charging handle to ensure the bolt carrier moves freely and the stock does not bind. Check that the stock screw is fully seated. If the stock wobbles, the screw may not be tight enough or the buffer tube threads may need cleaning.
Product facts
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A2 Buttstock Black A2 Fixed Stock: The A2 Buttstock Black A2 Fixed Stock by Star Tactical Supply is a fixed A2-style buttstock in black. It is sold as the stock only; the upper buffer tube screw and buffer tube are not included. You must purchase a separate buffer tube, buffer, spring, and screw set to complete the installation, so factor those into your build budget.
A2 Buttstock Black A2 Fixed Stock
Who should use an A2 fixed buttstock?
Best for
- Shooters building a classic M16-style or precision AR-15 who want a stable, non-adjustable stock
- Those who prefer a fixed length of pull and do not need to adjust for different shooters or gear
Not for
- Users who need a collapsible stock for storage, transport, or adjusting length of pull for different body types or layered clothing
- Builders who do not already have a rifle-length buffer tube and related parts, as the stock alone is incomplete
