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2A Armament
Overview
The 2A Armament Builder Series Billet AR-15 Buffer Tube Assembly is a complete parts kit designed for carbine builds, featuring a Mil-Spec buffer tube that ensures compatibility with a wide range of stocks and recoil systems. Crafted from durable aluminum and finished with hardcoat anodizing, this assembly provides a reliable and robust solution for your AR-15 platform. This buffer tube assembly is commonly found in tactical and general purpose builds, making it a versatile choice for builders looking to enhance their firearm's performance.
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Based on build data

Strike Industries Extended Bolt Catch
Bolt Catch
Law Tactical AR Folding Stock Adapter Gen 3 - HK
Stock Adapter
Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel
Buffer Spring
Strike Industries Cobra Billet Aluminum Trigger Guard - Red
Trigger Guard
Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK
Takedown Pin
Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C
Buffer SpringAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Extended Bolt Catch | Bolt Catch | 82 |
| Law Tactical AR Folding Stock Adapter Gen 3 - HK | Stock Adapter | 74 |
| Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel | Buffer Spring | 68 |
| Strike Industries Cobra Billet Aluminum Trigger Guard - Red | Trigger Guard | 61 |
| Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK | Takedown Pin | 59 |
| Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C | Buffer Spring | 57 |
| Platform | Percentage |
|---|---|
| AR-15 | 79.5% |
| AR-10 | 18.2% |
| AR-9 | 2.4% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 66.6% |
| .223 Wylde | 12% |
| 300 Blackout | 7.9% |
| .308 Win | 4.7% |
| .450 Bushmaster | 2.2% |
| 6mm ARC | 1.9% |
| 9mm | 1.3% |
| 6.5 Grendel | 1.3% |
| .458 SOCOM | 0.6% |
| 7.62x39mm | 0.6% |
| .22 ARC | 0.3% |
| .22 LR | 0.3% |
| .224 Valkyrie | 0.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 45.5% |
| Carbine | 26.9% |
| Rifle | 17.1% |
| Pistol | 9.8% |
| Blowback | 0.4% |
| Intermediate | 0.4% |
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