SPEAR ARMS Marui GBBR M4A1 Compatible Barrel Nut Adapter

¥2,667
  • item sku SARMS-TM-SBNA-M4GBB
  • By attaching it to the barrel base of Marui's M4A1, it is a part that allows you to install a front kit made overseas.
  • By suppressing the rattling of the hand guard and outer barrel, and adjusting the distance between the barrel nut and upper receiver with the included shim, you can customize it even more!
  • Comes with 2 shims for position adjustment.
  • Weight (grams): 10
  • Manufacturer: Spear Arms

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