The handguard retention ring was angled to make it easier to install and uninstall the handguards.The pistol grip adds a notch for the middle finger and more texture to enhance the grip.

 
  • 护木截面从原本的三角形形状改成了有散热肋条可以起防滑作用的圆形,使其更适合小手掌的抓握。
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