Sig Sauer

SIG SILENCER 5.56MM STS DIRECT THREA

All Sig Sauer suppressors
Sig Sauer SIG SILENCER 5.56MM STS DIRECT THREA - Suppressor - view 1
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Plan your Class 3 dealer

Suppressors go through a Class 3 (SOT) dealer, and the federal tax on them has been $0 since January 1, 2026. You still pay the dealer's transfer fee. Some states only allow suppressors and SBRs that are federally registered or possessed in compliance with federal law. Check your state's statute before you buy.

Federal and state suppressor rules

Sig Sauer

Overview

The SIG Silencer 5.56mm STS Direct Thread is designed specifically for the 5.56 NATO caliber, providing effective sound suppression for your firearm. Its direct thread mount type ensures a secure attachment to your barrel, enhancing overall performance and durability. This suppressor is often integrated into mid-length gas system builds, making it a popular choice for builders looking to optimize their AR-15 for both accuracy and noise reduction.

Specifications

MPNSIG_SILENCER_5.56MM_STS_DIRECT_THREA
Caliber5.56 NATO
Mount TypeDirect Thread

Available Merchants(1)

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BattleHawk Armory
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$343.04
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Build history on GunPartPicker

Builders have added the SIG SILENCER 5.56MM STS DIRECT THREA to their builds on GunPartPicker. Since April 2026, it ranks #122 of the 528 suppressors builders have added. Builds with this suppressor are mostly chambered in 5.56 NATO (71%, then .223 Wylde 21%), split between mid-length (50%) and carbine-length (38%) gas systems, and nearly all AR-15.

Today the one retailer we track is out of stock. Listed prices start at $343.04 at BattleHawk Armory for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

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Optic$580in 13% of them
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black

Magpul AR-15 MOE Stock Collapsible Mil-Spec Black

Stock & Brace$34in 9% of them
Daniel Defense M-LOK Vertical Foregrip Mil-Spec+ - FDE

Daniel Defense M-LOK Vertical Foregrip Mil-Spec+ - FDE

Foregrip$35in 13% of them
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Charging Handle$80 · out of stockin 30% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

100%
AR-15100%

Caliber

71.4%
5.56 NATO71.4%
.223 Wylde21.4%
.45 ACP7.1%

Gas System

50%
Mid-Length50%
Carbine37.5%
Rifle12.5%

Builds Featuring This Part

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Builds in the community that include the SIG SILENCER 5.56MM STS DIRECT THREA

BuildPartsTotal
For hunting hogs 8" build
For hunting hogs 8"		16$2082.42
tactical tow truck operator build
tactical tow truck operator		18$4273.98

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