2A Armament

2A Armament Builder Series Billet AR-10 Buffer Tube

2a Armament Builder Series Billet Ar-10 Buffer Tube - Buffer Tube for AR-15 - view 1
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2A Armament

Overview

The 2A Armament Builder Series Billet AR-10 Buffer Tube is a Mil-Spec carbine buffer tube designed for reliable function and compatibility with standard AR-10 builds. Made from aluminum, this tube ensures durability while maintaining a lightweight profile. This buffer tube is commonly found in builds featuring a mid-length gas system and chambered in .308 Win, making it an excellent choice for those looking to optimize their performance in this caliber.

Specifications

MPN2A-BSBT-10
MaterialAluminum
AssemblyTube Only
Buffer Tube SpecMil-Spec
Buffer Tube TypeCarbine

Available Merchants(1)

Prices checked

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KY Gun Company
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$67.45
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September 2026 on GunPartPicker

2A Armament Builder Series Billet AR-10 Buffer Tube ranked #26 of the 49 buffer tubes builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #38 of the 68 buffer tubes builders have added.

It was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $67.45 at KY Gun Company for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey

Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey

Safety$65in 50% of them
TriggerTech Duty AR- 10 Flat Trigger - AHT-TDB-33-NNF

TriggerTech Duty AR- 10 Flat Trigger - AHT-TDB-33-NNF

Trigger$140in 33% of them
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Lower Receiver$155 · out of stockin 33% of them
Radian Raptor SD Ambidextrous Charging Handle - AR 10/SR 25

Radian Raptor SD Ambidextrous Charging Handle - AR 10/SR 25

Charging Handle$160 · out of stockin 17% of them
FAB Defense Tactical Folding Pistol Grip, Black - AGF-43S

FAB Defense Tactical Folding Pistol Grip, Black - AGF-43S

Pistol Grip$43in 17% of them
AR-308 Fixed Stock Recoil Buffer

AR-308 Fixed Stock Recoil Buffer

Buffer$175in 33% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

92.8%
AR-1592.8%
AR-104.8%
AR-92.4%

Caliber

69.3%
5.56 NATO69.3%
.223 Wylde10.2%
300 Blackout8.6%
.308 Win4.2%
9mm2.2%
Other5.3%

Gas System

49.7%
Mid-Length49.7%
Carbine25.5%
Rifle12.2%
Pistol11.1%
Blowback0.9%
Other0.7%

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