ARC15-T1 300 Blackout Complete Upper Receiver

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$434.99 $379.99
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The ARC15 Tier 1 is our base model upper. Equipped with functional yet affordable features that make it a great choice for a day at the range, as well as hunting applications. 

  • Atheris Milspec Receiver
  • Chrome Moly Barrel
    • 1:8 Twist
    • Expected 1MOA
  • Atheris Black Nitride BCG
  • Atheris 13” MLOK Handguard
    • Other Lengths Available
  • Ambidextrous Charging Handle
ARC15-T1 Barrel Specs
Caliber Barrel Length Twist Gas Length Thread Pattern Gas Block Size
.223 Wylde 16 1:8 Carbine 1/2x28 .750
300 AAC 16 1:8 Carbine 5/8x24 .750
6.5 Grendel 16 1:8 Carbine 5/8x24 .750
7.62x39 16 1:10 Carbine 5/8x24 .750
6.8 SPC 16 1:10 Carbine 1/2x36 .750
224 Valkyrie 18 1:7 Mid 1/2x28 .750
50 Beowulf 16 1:20 Mid 49/64x20 .875
450 Bushmaster 16 1:24 Carbine 5/8x32 .875
458 Socom 16 1:14 Carbine 5/8x32 .875