Bartlein, 1-7.7 Twist Tactical Upper, Threads 5/8-24

Caliber     .223/5.56
Gas Block  .750



This upper is built on a MIL Spec A4 receiver with MIL Spec complete bolt carrier assembly, charging handle and standard A2 flash suppressor. Minus the handguard and gas block.

  • Manufactured by: Compass Lake Engineering

Additional information

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Chamber Type



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