請教這隻complete upper如何？自裝308娛樂精度m5求教！

alexzzdd

20" .308 Stainless Steel Barrel Features:

• • M5E1 Assembled Upper Receiver
  • Gen 2 Enhanced Handguard of choice
  • 20" .308 Rifle Length Stainless Steel Barrel
  • Low Profile Gas Block and Rifle Length Gas Tube
  • Product comes assembled
    
•          Twist: 1 in 10
•          Threading: 5/8 x 24
•          Material: 416R Stainless Steel
•          Finish: Bead Blasted
•          Gas Block Journal: .750"
•          Gas System Length: Rifle
•          Weight: 54.24oz
•          DPMS Barrel Extension
•          HP and MPI Tested
• 不家防，純娛樂，預防shtf，求教謝謝