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AR-15 Buffer Tubes

For an AR-15 to work correctly, it needs to be equipped with well-fitting, high-quality parts. A vital part of any AR's function is the buffer tube, also known as a receiver extension, so finding the right fit for your firearm is a necessity. 

At Wing Tactical, we provide our customers with the products and knowledge they need to enhance their AR-15 and have a fantastic shooting experience. 

Buffer Tube Lengths 

Whether you're assembling an AR-15 for the first time or have dozens of builds under your belt, it's essential to know the different lengths of buffer tubes and when you should use them. Picking the right tube will ensure you comply with the legal guidelines surrounding the AR platform and help you construct a firearm that functions smoothly and correctly. 

There are three common buffer tube lengths, and they are not interchangeable since each will have a corresponding buffer and gas system. Each offers different benefits for your rig:

  • Rifle buffer tubes: A longer tube not requiring an endplate is typically installed on fixed stock rifles and used with longer rifle buffers.
  • Pistol buffer tubes: Pistol-length buffer tubes are great for barrels shorter than 16 inches and compatible with arm braces, which stabilize and distribute the recoil force into the upper arm. 
  • Carbine buffer tubes: A shorter optionequipped with fewer coils and an exterior rib, carbine-length tubes are optimized for use with collapsible stocks. 

Buffer Tube Brands We Carry

At Wing Tactical, we only carry and provide the top brands to bring you the highest-quality products. The buffer tube brands that we offer include: 

  • 2A Armament
  • Aero Precision
  • Bravo Company
  • LUTH-AR

Buffer Tube FAQs

What's the difference between Mil-Spec and commercial buffer tubes?

Mil-Spec buffer tubes — those made to military specifications — are forged to form a single piece with rolled threads. They are commonly manufactured from 7075 alloys and measure between 1.145 to 1.150 inches in diameter, making for a thinner yet stronger design. 

On the other hand, you can also find commercial tubes made from lower-grade aluminum in 6061 alloys for a more economical option. These tend to be slightly bigger than their counterparts, with cut threads instead of rolled and a slant rather than a flat at the end furthest from the receiver. 

When deciding between Mil-Spec vs. commercial buffer tubes, it's convenient to know that there is little scientific information indicating one is better than the other. The most important thing to note is that a buttstock will only fit one or the other, so make sure your buffer tube and chosen stock are compatible before purchasing either. 

How do I replace my buffer tube?

Our buffer tube removal guide contains more specific information, but replacing a buffer tube is generally a simple, three-step process: 

  1. Remove the buffer and buffer spring. Push the buffer into stock and push the retaining pin down, then slide the buffer and its spring out of the tube. 
  2. Remove the buttstock. Maintain pressure on the spring and follow the manufacturer's directions on removing your specific buttstock. A fixed stock will likely require a large flathead screwdriver, while a collapsible model will call for a castle nut wrench or an armorer's tool.
  3. Remove the buffer tube by gripping it firmly and gradually turning it by hand. 

Once you have your buffer tube free, you should confirm whether your lower is designed for a commercial or Mil-Spec tube to ensure a correct fit to your stock — the rear slant of a commercial tube will provide a clear giveaway.

Guarantees We Provide at Wing Tactical

At Wing Tactical, we have one of the best and largest inventories of accessories and parts you'll find anywhere. We don't just sell any buffer tubes — we make sure they're worth your time and money. When you shop with us, you benefit from guarantees like: 

  • First-rate customer service: Our dedicated experts are gun enthusiasts too, and we'll answer all your questions along the way to help you find exactly what you need. 
  • Speedy shipping: Our next-day shipping helps us get your products to you fast, so you can use them when you really need them. 
  • Our seal of approval: We would never sell anything that our experts wouldn't use themselves — you can order here with confidence that you're getting the best. 
  • Satisfaction or your money back: In the rare case that you're disappointed with what you receive, you have 30 days to get a full, no-hassle refund. 

Explore Our Buffer Tube Selection at Wing Tactical

Customizing your AR-15 with our high-quality buffer tubes will give you the reliability and sturdiness that you deserve. Check out what we offer and take your gun to the next level. You can also get in touch with our expert team if you need any assistance.