6 ARC Upper Build: 16" Blackhole Weaponry Mid Length + CMT Billet Upper + Icon Defense Drivelock Rail

[WeR0206]

Working on another build....use case is a 16" 6 ARC SPR

Amazon list for tools/supplies mentioned on the channel:
3QMZQX5CVKWR2

Build list:

• Upper receiver: CMT Ultra Precision Billet Upper (# UPUR-1) ($200) (slight thermofit)
• BCG: CMC Enhanced 6 ARC BCG (# 81635) ($150)
• Gas tube: Luth AR mid-length stainless gas tube ($13)
• Gas block: SOLGW V2 (4150) Set Screw Gas Block (# GB750V2) ($35)
• Barrel: Blackhole Weaponry 416R Nitrided Custom 6mm AR-15 Barrel (3 groove polygonal) (standard profile) ($380)
• Handguard: Icon Defense 13” Drive Lock (# HGDL430BLKTI) ($288)
• Charging handle: Breek Arms Warhammer Mod2 Micro Latch FDE (# BRK555FDE) ($40)
• Muzzle device: Zev Tech 7.62 Flash Hider/Compensator (# ZMD-762) ($25)

Total cost: $1,131

Build videos:

1. AR-15 16” SPR Upper Build 6 ARC (1/6): Taking Barrel Measurements and Checking Headspace
   
2. AR-15 16" SPR Upper Build 6 ARC (2/6): Attaching Gas Tube To Gas Block & Installing Dust Cover
   

Barrel inspection notes:

• Weight: 36.5oz
• Gas system length: Mid-length
• Gas port size: 0.086”
• Gas block journal: .7505”
• Barrel Extension: 0.9985”
• Headspace gauge check (on fully stripped Radian bolt):
  • Go 1.1901”: closes
  • Field 1.201”: doesn’t close

Upper build tools video (1/2):

Upper build tools video (2/2):


Link to AR-15 upper build tools post:
https://www.youtube.com/post/Ugkxl7ASgT3q4m5A1T9gGwWvzNZD85zbZXqC
Link to AR-15 upper build steps post:
https://www.youtube.com/post/Ugkx-OnosmRoszGgOf4Z-qEJY6IQqnokqAE3
Link to threadlockers and assembly grease post:
https://www.youtube.com/post/Ugkx4dIT6Ls9f7DohFWdi8EIEJ2y3Lztq8WY