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SilencerCo
Overview
The SilencerCo 0.578-28 Thread Protector is designed to fit barrels with a .578x28 thread pitch, providing a secure and protective cover for your muzzle threads when not in use. This protector helps prevent damage from debris and impacts, ensuring that the threads remain in optimal condition for future muzzle device attachment. You'll often find this thread protector used in Mid-Length gas system builds chambered in 5.56 NATO, making it a practical choice for builders focused on functionality and durability.
Based on build data

Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas Block
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Gas Tube
Spikes Tactical Made in USA Ejection Port Door for AR-15 Style Rifle - SED7002
Dust Cover
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Radian Forward Assist - 7075 Aluminum - Black
Forward Assist
Magpul AFG-2 Angled Fore Grip - Black
ForegripAggregated 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 | 114 |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | Gas Tube | 101 |
| Spikes Tactical Made in USA Ejection Port Door for AR-15 Style Rifle - SED7002 | Dust Cover | 83 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 80 |
| Radian Forward Assist - 7075 Aluminum - Black | Forward Assist | 79 |
| Magpul AFG-2 Angled Fore Grip - Black | Foregrip | 73 |
| Platform | Percentage |
|---|---|
| AR-15 | 87.4% |
| AR-10 | 10.2% |
| AR-9 | 2.4% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 65.8% |
| .223 Wylde | 15.8% |
| 300 Blackout | 5.4% |
| .308 Win | 4.2% |
| 9mm | 1.6% |
| 6mm ARC | 1.6% |
| .450 Bushmaster | 1% |
| 6.5 Grendel | 0.9% |
| 7.62x39mm | 0.7% |
| .458 SOCOM | 0.7% |
| .223 Remington | 0.7% |
| .350 Legend | 0.5% |
| .50 Beowulf | 0.3% |
| 7.62x51 NATO | 0.3% |
| .204 Ruger | 0.2% |
| 6.5 Creedmoor | 0.2% |
| 6.8 SPC II | 0.2% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 47.7% |
| Carbine | 28.3% |
| Rifle | 13.4% |
| Pistol | 8.3% |
| Blowback | 1.4% |
| Proprietary | 0.4% |
| Intermediate | 0.4% |
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