Agency Arms

Agency Arms Sig P320 3.9" 9MM Premier Line Barrel, Matte Stainless Steel

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Agency Arms P320 Premier Line Barrels are for those who demand uncompromised performance and unrivaled appearance. While each of our lines maintain the same core accuracy and reliability, the Premier Line’s focus is giving attention to every detail. With added performance from our polished feed ramp to a polished crown to reduce friction The barrels are machined from 416R Stainless Steel, Fluted, Pulled Broached rifling with a 1:10 twist rate.

Non-threaded models are flush cut with a deep crown, threaded models are threaded in 1/2 x 28 with a matching octagonal thread protector.


  • Material: 416R Stainless Steel
  • Twist Rate: 1:10
  • Rifling: Pull Broached
  • Fluting: Ball End Mill Fluting
  • Crown: Flush Cut Reverse Crown
  • Finish: Matte Stainless Steel, Diamond Like Carbon (DLC), Titanium Nitride (TiN)
  • Threads: 1/2-28 TPI RH(On Threaded Models)
  • Compatibility: SIG P320 Compact/X-Carry

Barrel Length: 3.9 Inches

Caliber/Gauge: 9MM

Color: Stainless

Loaded Chamber Indicator: No

Model Fit: P320

Threaded: No

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