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Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works AR-15 5.56 Bolt Carrier Group is designed for reliable operation in 5.56 NATO caliber rifles. Its nitride finish enhances durability and provides corrosion resistance, which is crucial for maintaining performance in various conditions. This component is typically found in builds utilizing a carbine gas system, making it a great choice for those looking to optimize their rifle's functionality and longevity.
Sons of Liberty Gun Works AR-15 5.56 Bolt Carrier Group 158 Carpenter Sp/HPT/MPI
Prices checked
Sons of Liberty Gun Works AR-15 5.56 Bolt Carrier Group 158 Carpenter Sp/HPT/MPI was the fifth most added bolt carrier group on GunPartPicker in October 2026, behind the Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze, with about 2% of all bolt carrier groups added to builds. Up from #10 in September. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (81%, then .223 Wylde 10%), split between mid-length (55%) and carbine-length (31%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, but today only AT3 Tactical has it in stock. It dipped to $157.99 at Sportsmans Outdoor Superstore for a stretch in October 2026, well under its usual $199, so sales do come around. Buying today, the lowest price is $199 at AT3 Tactical, above October's low of $157.99, so a better deal may come back.
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Sons of Liberty Gun Works Ar-15 5.56 Bolt Carrier Group 158 Carpenter Sp/hpt/mpi
| Build | Parts | Total |
|---|---|---|
| Ar-15 | 21 | $2303.75 |
 | 8 | $1717.87 |
 | 20 | $2084.78 |
 | 27 | $953.87 |
 | 23 | $2375.83 |
 | 20 | $1917.28 |
 | 27 | $3285.61 |
| 18 | $1277.12 |
 | 13 | $1972.71 |
 | 12 | $1213.77 |
| 20 | $6716.24 |
 | 22 | $2533.20 |
1 global rating
Top reviews
Sons of Liberty Gun Works 5.56 BCG uses 158 carpenter steel for the bolt with HPT/MPI testing. Cycles smoothly on a 16 inch carbine. Gas key staking is properly done. Phosphate finish on the carrier exterior holds up well.
