“Proof Research 101292 AR-Style Barrel 308 Win 20″ Rifle Length Gas System 1:10″ Twist 5 Grooves, 5/8-24 tpi, Carbon Fiber Wrapped” has been added to your cart. View cart

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April 16, 2026Proof Research 128688 AR-Style Barrel 6mm ARC 18″ Stainless Steel Finish & Material Rifle Length with Threading & .750″ Gas Journal Diameter for AR-Platform
$649.00
Proof Research 128688 AR-Style Barrel 6mm ARC 18″ Stainless Steel Finish & Material Rifle Length with Threading & .750″ Gas Journal Diameter for AR-Platform
5 in stock
SKU: LIP|PR128688
Category: AR Barrels
Proof Research’s barrels exemplifies relentless pursuit of excellence. Whatever your preference is, you can expect the finest rifle barrel in the industry. The Traditional Steel barrel is long-lasting and extreme pressure resistant.
| UPC | 843068128688 |
|---|---|
| Manufacturer | Proof Research |
| Manufacturer Part Number | 128688 |
| Barrel Length | 18" |
| Caliber/Gauge | 6MM ARC |
| Length | 18" |
| Model | AR-Style Barrel |
| Product Type | Accessory-Barrels |
| Rate of Twist | 1-in-7.5 |
| Shipping Weight | 0.0 |



