toolcraft full auto BCG with phosphate finish. lockup is positive against a mil spec barrel, headspace measured correct. carrier was tight in the upper for the first 50 rds, broke in after that and now glides clean



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Palmetto State Armory
Overview
The Toolcraft 5.56 Phosphate MPI Full-Auto Bolt Carrier Group is designed specifically for 5.56 NATO caliber rifles, featuring a phosphate finish that provides durability and corrosion resistance. This full-auto style BCG ensures reliable cycling and performance, making it suitable for builds that demand robust functionality. You'll typically find this BCG in carbine gas system setups, aligning well with the common 5.56 NATO caliber configurations.
Toolcraft 5.56 Phosphate MPI Full-Auto Bolt Carrier Group - No Logo
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Toolcraft 5.56 Phosphate MPI Full-Auto Bolt Carrier Group - No Logo
| Build | Parts | Total |
|---|---|---|
![]() | 22 | $878.31 |
![]() | 22 | $1650.64 |
![]() | 9 | $462.85 |
![]() | 12 | $658.74 |
![]() | 20 | $1648.14 |
![]() | 20 | $1784.21 |
1 global rating
toolcraft full auto BCG with phosphate finish. lockup is positive against a mil spec barrel, headspace measured correct. carrier was tight in the upper for the first 50 rds, broke in after that and now glides clean