Description

  • Models: 340, 340E, 345, 345E, 346XP, 350, 351, 353, 435, 440E, 445, 445E, 450, 450E
  • Buffer screw M4 thread
  • Overall Length: 50mm
  • Diameter: 20mm
  • OEM: 503 89 83-01, 503898301

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