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Centurion Arms
Overview
The Centurion Arms C4 Quad Rail AR-15 Handguard is a mid-length free-float handguard designed for enhanced stability and precision. Its hardcoat anodized finish ensures durability while the integrated Picatinny mounting interface allows for versatile accessory attachment. This handguard is commonly found in mid-length builds, providing a solid platform for both tactical and competitive use.
Based on build data

Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas Block
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Gas Tube
Wilson Combat Ar-15 Billet Upper Receiver
Upper Receiver
BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Upper ReceiverAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 138 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 136 |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | Gas Tube | 126 |
| Wilson Combat Ar-15 Billet Upper Receiver | Upper Receiver | 120 |
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 109 |
| Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4 | Upper Receiver | 91 |
| Platform | Percentage |
|---|---|
| AR-15 | 87.8% |
| AR-10 | 9.3% |
| AR-9 | 3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 64.7% |
| .223 Wylde | 14.6% |
| 300 Blackout | 7.6% |
| .308 Win | 3.9% |
| .450 Bushmaster | 1.8% |
| 6mm ARC | 1.6% |
| 9mm | 1.5% |
| 6.5 Grendel | 1% |
| .458 SOCOM | 0.9% |
| 7.62x39mm | 0.8% |
| .223 Remington | 0.4% |
| .350 Legend | 0.3% |
| .204 Ruger | 0.2% |
| 6.8 SPC II | 0.2% |
| 7.62x51 NATO | 0.2% |
| 6.5 Creedmoor | 0.1% |
| 8.6 Blackout | 0.1% |
| .22 ARC | 0.1% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 43.7% |
| Carbine | 27.7% |
| Rifle | 16.7% |
| Pistol | 10.7% |
| Blowback | 1% |
| Proprietary | 0.2% |
| Intermediate | 0.1% |
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