Backup Tactical P320 Full Size Threaded Barrel - 1/2x28
The Backup Tactical P320 Full Size Threaded Barrel is a drop-in 9mm replacement barrel for the Sig Sauer P320 Full Size, machined from 416 stainless steel and finished in black nitride for hard-use durability. The muzzle is threaded 1/2x28 to accept standard 9mm suppressors and compensators, and a knurled thread protector is included. Pulled-broach rifling at a 1:16 twist and a SAAMI-spec 9x19mm chamber deliver reliable feeding and consistent accuracy. Cut for LCI, so it fits both LCI and non-LCI P320 slides — a solid pick for suppressor hosts, competition rigs, and range builds.
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- SKU
- 686696690376
- Color
- Black
$196.78
Description
Features
- Drop-In Replacement — Direct fit for full-size Sig Sauer P320 9mm pistols with no gunsmithing required.
- 1/2x28 Threaded Muzzle — Standard 9mm thread pitch accepts suppressors, compensators, and other muzzle devices.
- 416 Stainless Steel Construction — AISI 416 stainless billet machined for tight tolerances and long service life.
- Black Nitride Finish — Corrosion-resistant nitride treatment increases surface hardness and resists wear from suppressor use.
- Pulled-Broach Rifling — Six-groove pulled-broach rifling with a 1:16 twist rate delivers consistent accuracy with standard 9x19mm loads.
- SAAMI-Spec Chamber — Cut to full SAAMI specifications for 9x19mm Luger to ensure reliable feeding and safe pressures.
- LCI Compatible — Machined with a loaded chamber indicator cut so it runs in both LCI and non-LCI P320 slides.
- Thread Protector Included — Ships with a knurled thread protector to keep the threads clean when no muzzle device is mounted.
- Lifetime Warranty — Backed by the Backup Tactical lifetime warranty against defects in materials and workmanship.
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Customer Reviews
Top customer reviews
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Quality threaded barrel, shipped incredibly fastGot this barrel in the mail like 2 days after ordering which was awesome. It's a true drop-in fit for my P320 and didn't require any modifications at all. The pulled-broach rifling is supposed to improve accuracy and it definitely seems to help when I'm at the range. Thread protector is included which is a nice bonus.
Drop-in fit requires no gunsmithing or modifications needed
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