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Great foundation for your 9mm Ar15 build.
- 9mm Nitride BCG (ramped for standard hammer, compatible with glock & colt mags)
- Sport upper receiver (NOTE: may come with a standard mil spec stripped upper instead, with holes for DC & FA)
- 7075-T6 Aluminum
- Streamlined with no forward assist or dust cover capability (open ejection port).
- receiver may or may not have brass deflector.
- Item #: 9bcgandupper