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Proof Research
Overview
The Proof Research 6mm ARC AR-Type Barrel is an 18-inch stainless steel barrel designed with a SPR profile, making it a great choice for precision and versatility. Its 1:8 twist rate is optimized for stabilizing a wide range of bullet weights, while the rifle-length gas system ensures reliable cycling and reduced recoil for improved accuracy. This barrel is commonly found in builds that prioritize the 6mm ARC caliber, catering to shooters looking for enhanced performance in both target shooting and hunting applications.
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Based on build data
Wilson Combat Ar-15 Billet Upper Receiver
Upper Receiver
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Daniel Defense Mfr Xl Free Float Ar-15 Handguard - M-Lok - 9"
Handguard
Strike Industries Ar-15 Extended Forward Assist Lightweight Low Profile Red
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers
Aero Precision Ar-15 Ejection Port Cover Assembly
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Wilson Combat Ar-15 Billet Upper Receiver | Upper Receiver | 3 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 3 |
| Daniel Defense Mfr Xl Free Float Ar-15 Handguard - M-Lok - 9" | Handguard | 3 |
| Strike Industries Ar-15 Extended Forward Assist Lightweight Low Profile Red | 3 | |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 3 | |
| Aero Precision Ar-15 Ejection Port Cover Assembly | 3 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 6mm ARC | 100% |
| Gas System | Percentage |
|---|---|
| Rifle | 100% |
Builds in the community that include the Proof Research 6mm Arc Ar-Type Ar-15 Barrel - Rifle Length - Stainless Steel - .750" - 18"
| Build | Parts | Total |
|---|---|---|
 | 30 | $7953.79 |
 | 13 | $1425.71 |
 | 20 | $2971.40 |
| 19 | $2392.76 |
 | 9 | $1911.91 |
1 global rating
Proof Research 6mm ARC 18 inch rifle length barrel had a tight fit to the upper receiver, took some persuasion to seat the barrel extension properly into the upper. Once installed groups consistently sub MOA with match ammo.
