AR-15 Pistol Buffer Tube Assembly

(10 customer reviews)

$67.99

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SKU: A.5.10.2518
Fitment

Compatibility

  • Most AR-15 and AR Variants.
  • Not Compatible with AR-10 or .308 Rifles.
Description

Product Highlights

  • AR-15 Pistol Buffer Tube Assembly
  • Constructed of Military Type III Anodized, 6061 T6 Aluminum
  • Mil-Spec Tube Diameter for Proper Fit to Specified Manufacturer’s Range for the Sig Brace, etc.
  • Military Diameter Threads for Maximum Fit into AR-15 Receiver
  • Vynafoam Padded Tube Cap
  • Includes Steel Military Grade E-Coated Castle Nut and Locking Ring
  • Includes AR-15 Recoil Plug & Buffer Spring
  • Virtually Indestructible
  • Limited Lifetime Warranty
  • Made in the USA
Why ATI

Why Choose the ATI AR-15 Pistol Buffer Tube Assembly?

The ATI AR-15 Pistol Buffer Tube Assembly is designed for compatible AR-15 pistol builds that require a dedicated receiver-extension and buffer-system setup.

It provides a practical solution for new builds, component replacement or rebuilding an existing AR-15 pistol configuration with compatible parts.

Designed for AR-15 Pistol Applications

This assembly is intended specifically for compatible AR-15 pistol configurations rather than a traditional adjustable rifle-stock setup.

That makes it a useful option when building or servicing an AR pistol where the rear receiver extension is being used primarily as part of the firearm’s operating system.

Supports the AR Buffer System

The buffer tube assembly forms an important part of the AR-15 operating system by housing and supporting the buffer and recoil spring components.

A properly configured buffer system allows the bolt carrier group to travel rearward during cycling and then return forward into battery.

Convenient Assembly for Builds and Repairs

Using an assembly rather than sourcing individual components separately can simplify an AR-15 pistol project.

It is well suited for a new build, replacing worn components or restoring a firearm that needs a complete rear buffer-system setup.

Clean, Purpose-Built Configuration

An AR pistol buffer tube provides the necessary receiver extension without the adjustment positions associated with a traditional collapsible rifle stock.

The result is a straightforward rear-end configuration designed around the operating requirements of the AR-15 pistol platform.

Useful for Replacement and Maintenance

Buffer-system components experience repeated movement every time the firearm cycles.

Replacing worn or damaged components can be an important part of maintaining dependable operation, particularly on firearms that have seen substantial use.

The ATI AR-15 Pistol Buffer Tube Assembly gives owners a convenient option when servicing this part of the firearm.

Compatibility Is Important

AR-platform components can vary depending on caliber, receiver configuration, buffer system and other build specifications.

Always confirm that the buffer tube assembly is appropriate for the firearm and the other components being used.

Always review the ATI Fitment tab before ordering.

The ATI Advantage

ATI offers AR-platform components for both complete builds and individual replacement needs.

The AR-15 Pistol Buffer Tube Assembly provides a practical, purpose-built solution for compatible AR pistol configurations, helping owners complete a new build or replace an existing buffer-system assembly with confidence.

Reviews (10)

10 reviews for AR-15 Pistol Buffer Tube Assembly

5.0
Based on 10 reviews
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1-5 of 10 reviews
  1. Perfect fit looks and works great

  2. Perfect fit looks and works great

  3. Great product

  4. Great product

  5. Great stock!!

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  • Most orders ship within 24-48 hours or less.
  • Many orders ship the next business day, Monday through Friday.
  • Backordered items ship as soon as they become available.

We currently ship within the United States, including Alaska and Hawaii at increased rates. ATI does not ship online orders internationally.

California notice: Due to California Bill AB1263, we are unable to sell or ship to California as of 01/01/26.