Understanding the Role of the Pistol Grip in Your AR-15
The pistol grip, a protruding handle attached to the lower receiver, serves several essential functions in an AR-15. Primarily, it provides a stable and ergonomic surface for the shooter to hold the rifle. This grip allows for enhanced control during aiming, firing, and handling, particularly during dynamic movements. The shape and texture of the pistol grip contribute significantly to shooter comfort, reducing fatigue during extended use. The angle of the grip influences the wrist position, impacting how the shooter can acquire the target quickly and maintain a consistent sight picture. Beyond comfort and control, the pistol grip houses crucial internal components in some designs, such as springs and detents for the safety selector. The choice of pistol grip, therefore, is a highly personal one. Shooters frequently select grips that suit their hand size, shooting style, and preferences. Variations in shape, texture, and materials abound, offering a wide range of options to tailor the rifle to individual needs. Regardless of the specific grip design chosen, the pistol grip screw is the unseen hero, anchoring the grip firmly to the lower receiver.
The Standard Dimension for Your AR15 Grip Fastener
The primary focus of this article is to unequivocally clarify the correct dimensions of the screw that secures the pistol grip to the AR-15’s lower receiver. This seemingly simple fastener plays a critical role in maintaining the integrity of the grip and, consequently, the rifle’s functionality. Using a screw that is not the correct size can lead to a number of issues, from a loose grip to internal damage to the receiver.
The standard dimension for the AR15 pistol grip screw is the following: This critical fastener is specified as a 6-32 x 1/2 inch screw.
Let’s break down this specification to understand its significance:
6-32: This indicates the thread size. “6” refers to the nominal diameter of the screw, while “32” denotes the number of threads per inch (TPI). This is critical because it defines how the screw will engage with the threaded hole in the lower receiver. Using a screw with a different thread pitch will cause the screw to strip the threads or not engage at all.
1/2 inch: This number signifies the length of the screw. This length is critical; it needs to be long enough to fully engage with the threads in the lower receiver but not so long that it bottoms out and causes damage.
These dimensions are fairly standard across the AR-15 platform. The screw typically has a flat head or a countersunk head to allow it to seat flush with the bottom of the pistol grip and lower receiver, but this feature does not change the critical AR15 pistol grip screw size dimensions.
The Importance of Screw Material and its Consequences
While the size of the AR15 pistol grip screw is critical, understanding the materials used in its construction also matters. The screw must withstand the stresses of recoil, regular handling, and environmental exposure. The material affects durability, resistance to corrosion, and overall performance.
Common materials for pistol grip screws:
Steel: Steel screws, especially those made from carbon or alloy steel, are a prevalent and cost-effective option. They offer good strength and durability, capable of withstanding the stresses of firearm use.
Stainless Steel: Stainless steel screws provide superior corrosion resistance. They are a good choice for firearms exposed to moisture or harsh environments.
A screw that is made from high-quality materials will provide better performance and longevity. The material chosen does not change the prescribed AR15 pistol grip screw size. However, the quality of the material will affect the longevity of the screw and its resistance to wear and tear. Often, the screw will have some sort of coating, such as black oxide, to increase its corrosion resistance and provide a nice finish.
The Perils of Using the Incorrect Fastener
The simple act of tightening the pistol grip screw can have significant consequences if done incorrectly. Using the wrong size screw can create serious problems. Let’s examine the potential consequences of using a screw that is either too short or too long.
When the Fastener is Too Short: If a screw is too short, it won’t fully engage with the threads in the lower receiver. This can lead to a loose grip, which is the first indicator of a problem. This can make the grip move during use, impacting accuracy and handling. The constant movement can lead to stress and wear on the threads of the lower receiver. In more severe cases, the screw might strip the threads entirely, rendering the lower receiver hole useless. The consequence is a loose grip that could make the rifle unsafe to use.
When the Fastener is Too Long: Using a screw that is too long can also cause problems. The screw may bottom out before the grip is secured properly, leaving a gap between the grip and the lower receiver. In extreme cases, the screw can interfere with the internal components of the lower receiver, like the trigger mechanism. This can lead to malfunctions and potential damage to the internal components.
It is, therefore, of utmost importance to be certain of the correct AR15 pistol grip screw size to ensure secure and safe operation of your rifle. The choice of the screw is as important as the grip itself.
Sourcing Your New Fastener and What to Look For
So where does one find the right AR15 pistol grip screw? Fortunately, these screws are readily available through various channels:
Online Retailers: Major online retailers specializing in firearms components (Brownells, MidwayUSA, etc.) are excellent resources for finding the correct size screw. These retailers offer a wide selection, often with options for different materials and finishes.
Gun Stores: Many local gun stores carry AR-15 parts, including pistol grip screws. Supporting your local gun store is an excellent way to ensure you are getting advice on the proper components.
Hardware Stores: While not all hardware stores carry the specific 6-32 x 1/2-inch size, you may find them at larger hardware stores or those with a more comprehensive selection of small fasteners. Always double-check the thread size and length.
When purchasing, take note of the following tips:
Verify the Size: Always double-check the package to ensure the screw is marked as 6-32 x 1/2 inch.
Consider Purchasing Spares: It’s always a good idea to have a few spare screws on hand, just in case one gets lost or damaged during installation or maintenance.
Look for Quality: Choose screws made from quality materials. This will help ensure the screw’s durability and resistance to corrosion.
Installing Your New Fastener and Proper Torque
Installing the AR15 pistol grip screw is a simple process, but it’s critical to execute it correctly:
Prepare the Grip: Place the pistol grip onto the lower receiver, aligning the screw hole in the grip with the threaded hole in the receiver.
Start the Screw: Insert the screw into the hole and turn it by hand, ensuring it engages with the threads properly. Avoid forcing it. If it feels resistant, stop and check the alignment.
Tighten to the Correct Torque: Use an Allen wrench or the appropriate screwdriver to tighten the screw. Crucially, do not overtighten the screw. Excessive force can strip the threads. Use a torque wrench if possible. The generally recommended torque specification is between 15-20 inch-pounds. Consult the manufacturer’s guidelines for your grip and lower receiver if available.
Check the Grip: After tightening, ensure the grip sits flush against the lower receiver and is securely attached without any movement.
Troubleshooting and Solutions
Even when using the correct AR15 pistol grip screw, problems can sometimes arise. Here are some common troubleshooting scenarios and potential solutions:
Grip Won’t Stay Tight: If the grip loosens after a period of use, it may indicate that the screw is not fully engaged. Check the screw’s tightness and the condition of the threads. If the threads in the lower receiver are stripped, you may need to consult a gunsmith.
Stripped Threads in the Receiver: This is a more serious issue. The screw will not be able to tighten the grip properly, and the grip will be loose. Potential solutions:
Thread Locker: Try using a thread locker (e.g., Loctite) on the screw to help it grip better. However, this is often a temporary solution.
Helicoil/Thread Repair: This is a more advanced repair that involves using a thread insert (like a Helicoil) to create a new, stronger threaded hole. This repair may require the expertise of a gunsmith.
Professional Gunsmithing: In most cases, especially for serious damage, it is best to consult a qualified gunsmith. They can properly assess the damage and perform the necessary repairs.
Screw is Stuck: A stuck screw could be due to over-tightening, corrosion, or damage to the threads.
Penetrating Oil: Apply penetrating oil to the threads and let it soak for a while.
Gentle Tapping: Carefully tap the screwdriver or Allen wrench with a hammer to try to break the screw loose.
Heat: If possible, apply gentle heat to the screw (e.g., with a soldering iron) to help loosen any corrosion.
Drilling: As a last resort, and with extreme caution, you might need to drill out the screw, but this is best left to a gunsmith.
Conclusion: Ensuring Function and Safety
In conclusion, the AR15 pistol grip screw size is a seemingly small detail, yet its importance to the proper functioning and safe operation of your AR-15 cannot be overstated. The correct screw is the 6-32 x 1/2 inch. Using the appropriate screw prevents issues, such as a loose grip, impaired performance, and potential damage. Always use a high-quality screw, install it correctly, and maintain your AR-15 to prevent potential issues. By following the guidelines in this article, you’ll be well-equipped to ensure that your pistol grip is securely attached, promoting comfortable handling and reliable performance. As with any aspect of firearm maintenance, always double-check your work and consult with a qualified gunsmith if you have any questions or concerns. By understanding the correct screw size and proper installation techniques, you can optimize the performance and safety of your AR-15.
