Backup Tactical Threaded Barrel for SIG P320 Full Size 9mm (FDE)
Not Yet Rated | Write the First Review SKU: 222-BAC-S320TB-FDE-FS
UPC: 686696690383
MFG#: S320TB-FDE-FS

Backup Tactical Threaded Barrel for SIG P320 Full Size 9mm (FDE) — S320TB-FDE-FS

If you’re putting together a P320 Full Size with an FDE theme, this barrel is a simple way to keep the look consistent while adding muzzle threads for common devices. Backup Tactical built this as a purpose-made replacement for the full-size platform, using stainless steel and a durable finish that’s easy to live with.

MPN: S320TB-FDE-FS
UPC: 686696690383

What you’re getting

• Full size fit for the SIG P320 platform in 9mm

• Flat Dark Earth finish for a clean match on two-tone builds

• 1/2x28 threads (a widely used pitch for 9mm devices)

• 416 stainless steel construction

• Pulled-broach rifling and a 1:16 twist rate

• Cut for a loaded chamber indicator (LCI) and listed to work with or without LCI setups

• Thread protector included

Fitment notes

This listing is intended for SIG P320 Full Size 9mm configurations. If you’re shopping for Compact, Carry, or X-Compact variants, those typically use different barrel lengths and should be matched to the correct model-specific part before ordering.

Specifications

In the box

• Threaded barrel (S320TB-FDE-FS)

• Thread protector

Installation and safety

Always follow safe firearm handling practices. If you’re not comfortable installing parts, a qualified gunsmith can help, and you should function-check before live use.

FAQ

What thread pitch does this barrel use?
It uses 1/2x28 threads.

What length is the barrel?
It’s listed at 5.45 inches.

Is it made for the SIG P320 Full Size?
Yes, this model is sold for the P320 Full Size 9mm platform.

Does it work with an LCI setup?
It’s listed as LCI cut and compatible with pistols that have or don’t have an LCI.

Does it include a thread protector?
Yes, a thread protector is included.

What are the identifiers for product lookup?
MPN S320TB-FDE-FS and UPC 686696690383.