Best 19 A2 Buffer Tubes: Get the Most Out of Your Hunting Gear

The A2 buffer tube is a crucial component in AR-15 upper receivers, affecting both performance and reliability. Our detailed comparison evaluates the leading manufacturers, comparing factors like durability, fit, and price to help you choose the right tube for your rifle.

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Reviews

Mavala A2 Nail Buffer Tube

This nail buffer kit comes with two pads - a slightly abrasive gray one for smoothing out ridges and a pink one for polishing. It works wonders for getting rid of nail surface irregularities and giving your nails that salon-fresh look. The ergonomically designed tools make nail care quick and easy, perfect for busy people who want their nails to look flawless without the hassle.

ARB 5100140 Buffer Kit

The ARB A2 Buffer Tube kit helps protect your Toyota Land Cruiser or Tundra by adding steel components between the factory tubes and frame, improving durability. It’s designed for several model years across both the Land Cruiser and Tundra ranges, though some research is required to confirm compatibility with your specific vehicle. The tubes are made from quality steel, offering a simple upgrade that enhances your vehicle’s structural integrity without major modifications.

8oz PH Calibration Buffer Solution Kit

This reliable pH calibration kit features double-sealed, year-lasting buffer solutions colored for easy identification. Each bottle comes with precise NIST standards and a handy temperature/pH reference chart for accurate readings. The included 3M KCL storage solution helps maintain your pH probe’s sensitivity between calibrations.

Electro-Harmonix 12AU7/ECC82 Preamp Tube

These Russian-made tubes deliver powerful performance with remarkable clarity, matching the quality of vintage NOS GE 6189s while maintaining extremely low microphonics for clean signal reproduction. The Electro-Harmonix design closely matches the classic 12AU7/ECC82 specification, offering exceptional linearity across the entire frequency spectrum.

Genalex Gold Lion 12AU7 Preamp Tube

This reissue of the original Genalex Gold Lion combines classic vacuum tube warmth with modern reliability. The gold-plated pins and precision engineering deliver exceptional linearity and a naturally balanced sound that’s clean and free from noise. Whether you’re buffering signals or boosting gain, these tubes set a new standard for 12AU7 performance.

Wellco 48 in. FRP Round Tube

Imagine a tube that’s as dependable as it is versatile – that’s the Wellco 48-inch round tube. It’s made from a special kind of glass fiber that’s super strong and never rusts, so it’ll last through any project you throw at it. The best part? You can bend it easily to fit your space, and cut it to size with any metal saw when you need to shape it just right.

PWS Enhancd Stl BUFFR Carb H2

Crafted from 4140 steel with a distinctive fluted design, these buffertubes reduce contact points for smoother cycling. The FNC LIFE HD treatment creates an internal lubrication system that minimizes wear and ensures consistent performance. Built to precise specifications for 556 platforms, they’re available in both standard and enhanced versions to match your build’s needs.

GUNTEC AR15 Buffer Tube Kit

With its lightweight design and durable rainbow PVD coating, this complete buffer tube kit includes everything you need for reliable AR-15 operation – from the precision-engineered tube itself to the critical buffer and spring components that keep your rifle running smoothly.

Bowden J26400-3pt Buffer Tube Assembly

Made up of the Buffer Tube, Buffer Spring, and BCG, this little assembly might not grab all the attention, but it’s a crucial part of your pistol’s functioning. The 9.6-inch tube keeps everything nice and organized down at the bottom of your rifle, while the spring and BCG handle the business of chambering and ejecting those spent rounds. It’s like the unsung hero of your weapon – not flashy, but absolutely essential for getting the job done right.

GUNTEC AR15 Mil-Spec Buffer Tube Kit

This compact buffer tube combines durable T6 aluminum construction with a glossy rainbow PVD coating for a visually striking upgrade. The six-position tube system includes essential components like the end plate, castle nut, and high-capacity 3oz CAR buffer, along with an upgraded chrome silicon spring for improved reliability. At just 0.75 ounces, the lightweight design won’t affect your rifle’s balance while providing the performance boost you need for competitive shooting or precision shooting.

GUNTEC AR9 Buffer

Crafted with a clear polyurethane bumper and durable stainless steel body, this 9mm buffer brings some high-quality USA-made muscle to your AR9 build. At just 8.2 ounces, it keeps things nice and balanced while adding the right amount of weight to your lower receiver extension.

Spike’s St-t1 Tungsten Heavy Buffer

This spike’s tactical buffer brings serious weight to the party, with its solid aluminum body filled with three sliding tungsten weights. The black anodized finish and tough Mil-spec bumper make it look as mean as it performs. At just 0.19 ounces, it’s surprisingly effective at taming recoil without any pesky fluids to maintain.

Tacfire AR-10 A2 Buffer Tube

This AR-10 buffer offers a reliable upgrade with its precision-machined design and high-quality materials. At just 7.5 inches long, it maintains a slim profile while providing the durability you’d expect from a top-shelf buffer tube replacement.

Phase 5 AR-15 Buffer Tube Foam Pad

This lightweight buffer tube foam pad, weighing just 0.03 ounces, protects your AR-15 pistol’s buffer tube with durable NPVC foam that resists oils, fuels, and environmental factors like ozone and UV light. The precision-fit 3.5-inch pad works with 1.25 diameter buffer tubes to maintain smooth function while adding an extra layer of protection.

Battle Arms Development Mil-Spec Buffer Tube

When you’re building a reliable AR15 or M16, these competition-tested buffers are your go-to choice. Drop them into any collapsible buffer tube, and rest assured they’re built for the long haul. At just 0.31 ounces, they’re practically weightless—but don’t let their light frame fool you; these buffers are Battle Arms Development’s top pick for a reason.

Bad Carbine Buffer Silver Tube

Crafted to Mil-spec standards, these buffers from Battle Arms Development drop straight into any collapsible AR15/M16 buffer tube, making them a straightforward upgrade for your rifle build. Built for durability, these buffers are designed to last through rigorous use.

Bell Sports 7015305 Standard Bicycle Inner Tube

Made with mold-cured rubber for consistent sidewall and preventing high-pressure blowouts, these Bell bicycle tubes weigh just 120g and feature a 40mm Presta valve with cap. While some users report reliability, others have experienced premature failure and valve breakage. The tubes, sized for 700c wheels, are praised for their durability on both road and hybrid bikes.

Fortis La Stock with Buffer Tube

An 11-inch Hogue rifle stock in olive drab green, specifically designed for Fortis LA systems and the AR-15 LAS-BNDL-15-ODG kit. This simple, functional upgrade replaces the standard stock while maintaining the clean lines of your rifle.

Crickett Rifle Stock Kit

The Odin Works Zulu stock pairs premium 6061 aluminum construction with ergonomic design elements like an ambidextrous ambusling plate and adjustable length-of-pull. The included padded buffer tube significantly reduces felt recoil while maintaining smooth cycling. reviewers praise its customizable fit and solid build quality, though a few note minor assembly tweaks are required.

Buyer’s Guide

The A2 buffer tube is a critical component in modern firearms, particularly those chambered in 5.56 NATO and similar calibers. Understanding its importance and specifications can help you choose the right part for your rifle.

Function and Design

The A2 buffer tube houses the rifle’s buffer and spring, protecting them from damage during operation while enabling smooth cycling. Its distinct appearance, characterized by a rounded front end and distinct knurling pattern, distinguishes it from earlier buffer tubes.

Machining Quality

High-quality machining is crucial for proper buffer tube function and longevity. Look for straight, true bores with consistent wall thickness. The round front end should maintain its shape without signs of deformation or thinning.

Material Specifications

A2 buffer tubes are traditionally made from 4150 chromoly steel, known for its toughness and wear resistance. The outer surface should be phosphatized for corrosion protection, while exposed knurling may be bead-blasted for durability.

Compatibility and Fit

Ensure the buffer tube’s internal dimensions match your rifle’s specifications. The external diameter and knurling pattern should align with your firearm’s receiver. Consider the tube’s length, which varies between full and mid-length options, depending on rifle model.

FAQ

What is an A2 buffer tube?

The A2 buffer tube is an essential component of AR-15 upper receivers, specifically designed to house and protect the buffer and spring assembly. Unlike standard buffer tubes, the A2 version features a slightly shorter design, measuring 5.4 inches instead of 6 inches, which is characteristic of M4 carbine configurations.

Manufactured from high-quality 8620 steel with a black oxide finish, these tubes are engineered to meet or exceedmil-spec standards for durability and precision. The A2 design is particularly favored by users who prefer the compact profile while maintaining the structural integrity of a full-length tube.

How does an A2 buffer tube improve AR-15 functionality?

The shorter length of the A2 buffer tube reduces overall firearm length, making it ideal for carbine configurations where space is limited. This design choice also allows the upper receiver to clear obstacles more easily, such as when navigating tight quarters or vehicles.

The robust steel construction with black oxide finish not only enhances corrosion resistance but also prevents wear from the buffer assembly. The precision-machined interior maintains optimal alignment between the buffer and spring, ensuring reliable operating clearance and extended component lifespan.

Can an A2 buffer tube be used with any AR-15 upper receiver?

While the 5.4-inch length of an A2 buffer tube makes it compatible with most AR-15 carbines, it may not fit upper receivers with extended or free-floating handguards. Always measure your handguard’s length to ensure proper clearances before installation.

The tube’s 5.56mm diameter is suitable for standard M4/M16 operating systems, including compatible gas blocks and buffers. Replacement A2 tubes are available in both right-hand and ambidextrous variants to accommodate different grip preferences.

What maintenance is required for an A2 buffer tube?

Regular inspection for signs of wear or damage is crucial, as the buffer tube can become loose over time due to the constant pressure from the operating system. Any noticeable play or deformation should prompt immediate replacement.

When cleaning the buffer tube, use only mild solvent and a clean cloth to avoid damaging the black oxide finish. Dry thoroughly before reassembling to prevent moisture from affecting the internal components.

How much does an A2 buffer tube typically cost?

The price range for A2 buffer tubes varies depending on the manufacturer and material quality. Basic steel versions typically cost between $15-25, while premium coated or forged options can range from $25-40.

Most reputable firearm dealerships and online retailers stock A2 buffer tubes, offering both individual parts and complete kits including hardware and instructions.

Can the buffer tube be customized in any way?

While the basic functionality of the buffer tube cannot be altered, various accessories can be added to enhance its capabilities. These include buffer tube sleeves for improved grip, heat shields for added protection, and extended buffer tubes for longer upper receivers.

It’s important to note that any modifications should comply with local laws and maintain proper operating clearances. Always consult with a firearms expert when considering additional modifications to your buffer tube assembly.

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