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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.
Specifications
Silencerco 0.578-28 Thread Protector - AC1361
Available Merchants(4)
Prices checked
Price Alert
Build history on GunPartPicker
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 4 retailers we track have it in stock. Prices barely moved in October 2026, holding around $20.40, with no real sale all month. Buying today, the lowest price is $20.40 at Classic Firearms, which matches the best price we saw in October.
Prices checked · refreshed daily across 37 retailers
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Frequently Built With
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FAXON Firearms 16" 223 Wylde Match Barrel Stainless Steel Black
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Silencerco 0.578-28 Thread Protector - AC1361
| Build | Parts | Total |
|---|---|---|
 | 17 | $878.82 |
 | 11 | $944.91 |
 | 14 | $988.07 |
 | 12 | $639.86 |
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