SilencerCo LBP 556KSuppressor W/ Charlie ASR Mount - SU5420
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Goes to a Class 3 dealer
Needs an ATF Form 4, a $200 tax stamp and an approval wait. The dealer's fee is on top.
SilencerCo
Overview
The SilencerCo LBP 556K Suppressor is designed for use with 5.56 NATO caliber firearms, providing effective sound suppression and recoil mitigation. Featuring an ASR mount type, it allows for quick attachment and detachment to compatible muzzle devices, making it convenient for builders who frequently switch between configurations. This suppressor is commonly found in mid-length gas system builds, where optimizing performance and reducing noise is essential for the shooter.
Specifications
SilencerCo LBP 556KSuppressor W/ Charlie ASR Mount - SU5420
August 2026 on GunPartPicker
SilencerCo LBP 556KSuppressor W/ Charlie ASR Mount - SU5420 ranked #79 of the 179 suppressors builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #166 of the 385 suppressors builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $989.40, so there haven't been real sales lately. Buying today, the lowest price is $989.40 at Classic Firearms, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
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LMT Defense 5.56 F-A BOLT CARRIER GROUP - R-L7D3
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 1 →Builds in the community that include the SilencerCo LBP 556KSuppressor W/ Charlie ASR Mount - SU5420
| Build | Parts | Total |
|---|---|---|
 | 13 | $2160.81 |
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