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Use Code: PARTS15

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SIG P320 9MM FULL SIZE BARRELS

SIG P320 9MM FULL SIZE BARRELS Reviews & Ratings

BROWNELLS SIG P320 9MM FULL SIZE BARRELS

Brownells SIG Sauer P320 9mm full-size barrels provide a new level of aftermarket support for owners of SIG's popular modular pistol platform, giving them the chance to do more and perform better with their handgun. The Brownells Sig Sauer P320 9mm full-size barrels are completely made in the United States from solid bar stock of 416-R certified stainless steel. The steel is completely relieved of all stresses and are threaded for suppressor use.

  • Rifled with 1:10 twist rate
  • Features 11-degree target crown
  • Thread pitch: 1/2x28 TPI
  • Nitride-treated for corrosion resistance
  • DOES NOT COME WITH THREAD PROTECTORS

The Brownells Sig Sauer P320 9mm full-size barrels also features conventional land-and-groove rifling instead of polygonal rifling.

NOTE: Does NOT work with LCI

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5 Stars
67%
4 Stars
0%
3 Stars
17%
2 Stars
0%
1 Stars
17%
Reviews Summary
The SIG P320 threaded barrel receives mixed reviews. While some users appreciate its drop-in fit and commend its performance with suppressors, others face significant issues with chambering and reliability. Points of concern include improper threading for heavier suppressors and a lack of a thread cover. Overall, purchasers are advised to assess their specific needs and consider alternatives if issues arise.
What Reviewers Are Saying
Performance and Reliability
40%
Reviews are divided on the barrel's performance. Some users note that it functions well and chambers rounds effectively, while others report serious issues with feeding and compatibility with suppressors, indicating inconsistent reliability across different setups.
Compatibility with Suppressors
50%
Several reviewers mention difficulties when using heavier suppressors, with some stating that the barrel is not properly cut for suppressor use. While lighter suppressor options may work, customers are cautioned to consider spending more on better-suited products if suppressor performance is a priority.
Installation Ease
60%
Many customers find the installation of the barrel straightforward and easy, praising its drop-in fit. This aspect has been positively noted across several reviews, contrasting with those who struggle with fitment issues.
Lack of Accessories
30%
The absence of a thread cover is a noted drawback in some reviews, which may affect users' overall satisfaction. Customers appreciate completeness in product accessories and may see this as a missed opportunity for the manufacturer.
Initial Impressions
20%
Several reviews reflect initial satisfaction with the barrel, relating to fit and aesthetic qualities. However, many of these reviewers have yet to test the barrel thoroughly in practice, and therefore, their opinions may evolve once they gain more experience.
3
Not for use with suppressor(at least if its heavy)
This is indeed a threaded barrel for the Sig P320... but what it doesn't mention is that its not cut properly for use with a suppressor. I installed this barrel and fought with it trying 6 different power springs trying to get it to work with my suppressor. Ultimately, replacing this barrel with a silencerco barrel solved my issues. This may work for very light suppressors, but if your suppressor weighs more than a couple ounces, spend a bit more on the SiCo barrel so you get something that actually works well with your can.
by Andy on March 03, 2025
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