Backup Tactical Threaded 9mm Barrel for Sig P320 Full Size Pistols
or 4 interest-free payments of $38.75 with
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Lifetime Warranty what it covers
Product description
Backup Tactical Sig P320 Threaded Barrel
The Backup Tactical threaded barrel brings an upgraded look with better performance to your Sig Sauer P320 full-size pistol. Featuring precision machining and a durable black nitride finish, this drop-in replacement barrel is ready to boost your P320.
The 1/2×28 threads allow the use of compact sound suppressors or muzzle devices to customize functionality. Constructed from superior-grade stainless steel for maximum durability and corrosion resistance. This Backup Tactical barrel is made to drop into P320 full-size models chambered in 9mm.

Specifications
- Brand: Backup Tactical
- Model: Threaded Barrel for Sig P320 Full Size
- MPN: S320TB-BLK-FS, S320TB-FDE-FS
- Caliber: 9mm
- Thread Pattern: 1/2×28
- Finish: Black Nitride, Flat Dark Earth
- Material: Stainless Steel
All 2 options on this page
- Backup Tactical Threaded 9mm Barrel for Sig P320 Full Size Pistols - Color: Flat Dark Earth | SKU: S320TB-FDE-FS
- Backup Tactical Threaded 9mm Barrel for Sig P320 Full Size Pistols - Color: Black | SKU: S320TB-BLK-FS
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Warranty & returns
Lifetime Warranty
Backup Tactical backs its products 100% and is happy to replace the product you bought or process a refund if you aren’t satisfied.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.








