Triarc Systems 300 Blackout TSR-15S Barreled AR-15 Upper - 8.3"

Manufactured by Triarc Systems
SKU: TSU-300-8
MPN: TSU-300-8
Manufactured by Triarc Systems
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The Triarc Systems 8.3" .300 Blackout TSR-15S Barreled Upper is a forged upper that represents a premium upgrade for your current AR or a great place to begin your next build. This barreled upper features the TRACK 2.0 barrel, a suppressor only Mil-Spec barrel machined from 4150V CMV with a black nitride finish and NP3 coated barrel extension for superior performance and unrivaled durability. The chambered .300BLK TRACK 2.0 features proprietary rifling known as Single Edge Polygonal (SEP). The primary function of the SEP's single edge and polygonal areas separating the grooves is to provide an improved rifling experience. This combination of standard and polygonal areas helps the bullet move along the barrel symmetrically for a direct line to the target. The Triarc barreled upper boasts a 7 sided M-LOK handguard, pistol length gas system with a .750 diameter w/1" length gas block for superior performance.

Please note: BCG or charging handle not included.

  • 8.3" Barrel
  • 4150V Chrome Moly
  • Black nitride finish
  • NP3 extension finish
  • 7 Sided M-LOK
  • Pistol length gas system
  • .750" diameter w/ 1" length gas block
  • 1:7" twist rate
  • 1/2×28 muzzle thread
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AssemblyBarreled Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourMedium
Barrel Length8.3
Barrel LiningSalt Bath Nitride
Barrel Material4150V Chrome Moly
BrandTRIARC Systems
Caliber Gauge300 Blackout
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard7 in M-LOK Rail
Thread Pattern1/2 X 28
Twist Rate1:7

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