How to Remove an AR-15 Stock: A Comprehensive Guide for Gun Enthusiasts

Removing an AR-15 stock is a relatively straightforward process, but understanding the nuances and potential pitfalls is crucial for a safe and successful operation. This guide will walk you through the steps, covering both Mil-Spec and commercial buffer tubes, and address common questions that arise during the process. Safety is paramount, so always ensure your firearm is unloaded before beginning any disassembly.

The Essential Steps: Removing Your AR-15 Stock

Here’s the breakdown for removing your AR-15 stock:

1. Ensure the Firearm is Safe: This is non-negotiable. Remove the magazine, clear the chamber, and visually inspect to confirm the firearm is completely unloaded. Double-check. Triple-check.
2. Identify Your Buffer Tube Type: AR-15s typically use either a Mil-Spec or a commercial buffer tube. The key difference lies in the diameter and threading. Mil-Spec tubes have a slightly smaller diameter (1.148″ +/- 0.005″) and square-cut threads, while commercial tubes are slightly larger (1.168″ +/- 0.005″) and often feature slanted threads. Knowing which you have will prevent you from trying to force the wrong stock onto the tube later.
3. Locate the Adjustment Lever/Release Button: Most collapsible stocks feature a lever or button on the underside that allows you to adjust the stock’s position. Depress this lever/button fully.
4. Slide the Stock Off: With the lever/button depressed, slide the stock rearward off the buffer tube. It should move freely. If it doesn’t, double-check that the lever/button is fully depressed and that there are no obstructions.
5. Inspect the Buffer Tube Assembly (Optional): Once the stock is removed, you can inspect the buffer tube, buffer, and buffer spring. These components work together to manage recoil and ensure proper cycling of the firearm. Note their arrangement for reassembly. Do not remove the buffer tube unless you have the correct tools and knowledge. This involves disengaging the castle nut and potentially compressing the buffer spring under tension, which can be dangerous if not done correctly.

Common Scenarios and Considerations

The basic procedure above is applicable to most collapsible AR-15 stocks. However, here are a few variations to consider:

• Fixed Stocks: Fixed stocks, unlike collapsible stocks, are directly attached to the lower receiver without an adjustable buffer tube. Removing a fixed stock usually involves removing screws or bolts that secure the stock to the receiver. This process often requires specific tools and knowledge of the lower receiver assembly. Consult a qualified gunsmith if you are unsure.
• A2 Stocks: A2 stocks are a common type of fixed stock. Removing an A2 stock typically requires a specialized A2 stock wrench to loosen the screw that secures the stock to the buffer tube. The buffer and spring are under tension, so be prepared for them to come out once the stock is removed.
• Magpul Stocks: Magpul stocks are popular and generally easy to remove. They follow the same basic procedure as other collapsible stocks, but some models may have unique features or locking mechanisms. Refer to the Magpul documentation for your specific stock model.
• Tight-Fitting Stocks: Sometimes, a stock can be difficult to remove, even with the lever/button depressed. In this case, try gently wiggling the stock back and forth while applying rearward pressure. Avoid excessive force, as this could damage the stock or buffer tube. A rubber mallet can be used very gently to tap the stock rearward, but be extremely cautious.

Safety Precautions

• Always ensure the firearm is unloaded before disassembling it.
• Wear eye protection to prevent debris from entering your eyes.
• Work in a clean and well-lit area.
• Use the correct tools for the job.
• If you are unsure about any step, consult a qualified gunsmith.
• Be mindful of small parts, such as springs and detents, which can be easily lost.
• Never point the firearm at anything you are not willing to destroy.

Frequently Asked Questions (FAQs)

1. What tools do I need to remove an AR-15 stock?

For most collapsible stocks, you won’t need any tools. Just your fingers to depress the adjustment lever/release button. For fixed stocks, especially A2 stocks, you’ll likely need an A2 stock wrench. A punch set might be needed for other fixed stock configurations, as well as potentially removing the buffer tube assembly itself.

2. How do I identify if I have a Mil-Spec or commercial buffer tube?

The easiest way is to measure the diameter of the buffer tube. Mil-Spec tubes are approximately 1.148 inches in diameter, while commercial tubes are approximately 1.168 inches. Also, examine the threading: Mil-Spec typically has square-cut threads, while commercial often has slanted threads.

3. What happens if I try to install a Mil-Spec stock on a commercial buffer tube (or vice versa)?

You won’t be able to install a Mil-Spec stock on a commercial buffer tube. The Mil-Spec stock will be too small to fit over the larger commercial tube. Trying to force it will likely damage the stock. While you can technically fit a commercial stock onto a Mil-Spec tube, it will be very loose and wobbly, and will negatively affect accuracy and stability. It’s crucial to use the correct matching stock and buffer tube.

4. Can I damage my AR-15 by removing the stock?

If you follow the correct procedures and exercise caution, you should not damage your AR-15 by removing the stock. However, using excessive force, incorrect tools, or neglecting safety precautions can lead to damage. Incorrectly removing the buffer tube can damage the threads on the receiver or cause injury from the buffer spring.

5. How do I remove a fixed AR-15 stock (A2 stock)?

Removing an A2 stock requires an A2 stock wrench. Loosen the screw at the rear of the stock using the wrench. Once loosened, the stock can be unscrewed from the buffer tube. Be aware that the buffer and buffer spring are under tension and will be released when the stock is removed. Handle the buffer and spring with care to avoid injury.

6. Do I need to remove the buffer tube to change the stock?

No, you usually don’t need to remove the buffer tube to change the stock, unless you are switching between Mil-Spec and commercial stocks and the existing buffer tube is incompatible with the new stock. For most collapsible stocks, you can simply slide the old stock off and slide the new stock on.

7. What is the purpose of the buffer and buffer spring?

The buffer and buffer spring are crucial components that absorb recoil energy and ensure proper cycling of the AR-15. They help to reduce felt recoil, prevent damage to the firearm, and ensure that the bolt carrier group properly extracts and ejects spent cartridges.

8. How tight should the castle nut be on the buffer tube?

The castle nut should be tightened securely, but not excessively. Overtightening can damage the threads on the buffer tube or lower receiver. A good rule of thumb is to tighten the castle nut until it is snug and then tighten it an additional 1/8 to 1/4 turn. Use a castle nut wrench for proper torque.

9. What if my stock is stuck and won’t slide off?

First, make sure the adjustment lever/release button is fully depressed. If it’s still stuck, try gently wiggling the stock back and forth while applying rearward pressure. A rubber mallet can be used very gently to tap the stock rearward. Avoid excessive force. Check for any obstructions inside the stock or on the buffer tube.

10. Can I use any AR-15 stock on any AR-15 lower receiver?

No, compatibility depends on the buffer tube type. You need to ensure that the stock is compatible with the buffer tube installed on your lower receiver. As mentioned earlier, Mil-Spec stocks require Mil-Spec buffer tubes, and commercial stocks require commercial buffer tubes.

11. What are some popular AR-15 stock brands?

Some popular AR-15 stock brands include Magpul, B5 Systems, LMT (Lewis Machine & Tool), Daniel Defense, and Mission First Tactical (MFT).

12. Is it legal to change the stock on my AR-15?

Yes, it is generally legal to change the stock on your AR-15, as long as you comply with all applicable federal, state, and local laws. Be aware of laws regarding overall firearm length and restrictions on certain types of stocks (e.g., bump stocks). Always consult with a legal expert if you are unsure about the legality of a particular modification. Changing a stock may affect the legality of the firearm depending on state and local laws, making it the owner’s responsibility to understand and abide by these laws.