PSA full auto nitride BCG cycles reliably for several hundred rounds. The nitride finish marks up easier than I expected from carbon scraping and brass contact. Function is unaffected, purely cosmetic. Good budget BCG.






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Palmetto State Armory
Overview
The PSA AR-15 Bolt Carrier Group is designed for the 5.56 NATO caliber and features a full-auto style, making it suitable for semi-automatic and full-automatic configurations. The nitride finish enhances durability and corrosion resistance, which is crucial for maintaining performance in various conditions. This bolt carrier group is commonly found in mid-length gas system builds, providing reliable cycling and improved recoil management for the shooter.
PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
| Build | Parts | Total |
|---|---|---|
![]() | 21 | $681.31 |
![]() | 18 | $618.64 |
![]() | 20 | $786.14 |
![]() | 14 | $1026.71 |
![]() | 15 | $900.74 |
![]() | 23 | $1937.36 |
![]() | 14 | $768.51 |
![]() | 13 | $936.36 |
![]() | 8 | $919.89 |
![]() | 8 | $476.90 |
![]() | 8 | $438.44 |
![]() | 12 | $401.75 |
4 global ratings
PSA full auto nitride BCG cycles reliably for several hundred rounds. The nitride finish marks up easier than I expected from carbon scraping and brass contact. Function is unaffected, purely cosmetic. Good budget BCG.
PSA full auto BCG with the nitride coating runs cleaner than my old parkerized BCG, carbon scrapes off with a rag instead of a brush. Bolt is properly HPT/MPI tested. Gas key is staked from the factory. Solid budget BCG that punches above its price point.
PSA full auto BCG with nitride finish runs reliably. Ran 200+ rounds without cleaning issues. The nitride surface marks up easier from carbon and brass scraping than I expected. Function unaffected, cosmetic only.
PSA full auto nitride BCG stays cleaner than my old parkerized BCG. Carbon wipes off with a rag. Bolt is properly HPT/MPI tested. Gas key staked from the factory. Solid budget BCG that punches above its price.