Are Sig P320 barrels drop-in compatible?

Yes. All barrels listed are drop-in ready and compatible with Sig P320 factory slides. No fitting or gunsmithing required.

What sizes are available for Sig P320 barrels?

We carry P320 barrels for Full Size, Compact, XCompact, and XCarry models in various finishes and configurations.

What’s the benefit of a fluted or match-grade barrel?

Fluted and match-grade barrels offer improved accuracy, faster heat dissipation, and reduced weight—perfect for competition or custom builds.

Sig P320 Barrel – Threaded, Fluted, Match-Grade Options

Name: Sig P320 Barrels
Brand: Mounts Plus
SKU: SIG-P320-BARRELS

**Backup Barrel Sig P320 ThreadedFde** $167.42

**Backup Barrel Sig P320 Cmpct ThreadedFde** $167.42

**Backup Barrel Sig P320 Cmpct ThreadedBlk** $167.42

**Backup Barrel Sig P320 ThreadedBlk** $167.42

**Faxon Match Barrel Sig P320 Fs W/ff Tr** $136.68

**Ggp P320 Full Size Barrel Blk Ntride** $177.59

**Ggp Slide Sig P320 Compact V2 Black** $385.43

**Ggp P320 Compact Barrel Blk Nitride** $177.59

**Ggp P320 Compact Tb Black Nitride** $187.19

**Sig Barrel P320sc 9mm 4.3in Tb 1/2 X 28** $204.55

**Sig P320 Pro Slide 9mm 3.9 Or Blk** $300.00

**P320 Full Size 9mm Threaded Barrel** $204.55

**P320 Compact/Carry 9mm Threaded Barrel** $204.55

**P320 XCOMPACT/Subcompact 9mm Threaded Barrel** $204.55

**Sig Barrel P320f 9mm 5.5in Tb 1/2 X 28** $204.55

**P320 Compact/Carry Gold Barrel** $204.55

**True Precision P320c Barrel 9mm Sts Tb** $170.99

**True Precision P320 X-cmp 9mm Blk Dlc Tb** $189.99

**True Precision P320c Barrel 9mm Blk Nit Tb** $180.49

**True Precision P320 X-cmp 9mm Blk Tb** $180.49

**True Precision P320c Barrel 9mm Cpr** $180.49

**True Precision P320c Barrel 9mm Blk Dlc Tb** $189.99

**True Precision P320c Barrel 9mm Gld** $180.49

Sig P320 Barrels – Threaded, Fluted & Match-Grade Options

Upgrade Your Sig P320 With a Precision Barrel

Take your Sig P320 to the next level with our selection of premium P320 barrels. Whether you're enhancing your everyday carry setup or building out a competition-ready pistol, we offer a wide range of drop-in Sig P320 barrels for full-size, compact, and X-Carry models.

From threaded barrels for comps and suppressors to match-grade, fluted designs for increased accuracy and heat dissipation, you'll find the exact configuration you need for your Sig build.

All barrels listed here are drop-in ready, CNC-machined, and made from high-quality materials for reliability, performance, and style.

Top Sig P320 Barrel Features:

✅ Threaded barrels for compensators & suppressors
✅ Match-grade construction for improved accuracy
✅ DLC, Nitride, Stainless & TiN finishes
✅ Fluted and non-fluted profiles
✅ Drop-in fit for P320 Compact, Full Size, XCompact, and XCarry

Popular P320 Barrels Available Now:

Faxon P320 Match Series – Threaded & Fluted
True Precision P320C Barrels – Gold, Black, Copper, and Stainless
Backup Tactical P320 Compact – Threaded 9mm, FDE & Black
Grey Ghost Precision Full-Size Barrels – Black Nitride Finish
GGP P320 Compact Threaded Barrels – Suppressor Ready

Why Upgrade Your Sig P320 Barrel?

Better performance & tighter groups with match-grade tolerances
Threaded options for suppressors or comps
Enhanced durability with heat-resistant coatings
Aesthetic upgrades that match your build
Legal customization without affecting serialized components

Sig P320 Barrel FAQs

Q: Are these barrels drop-in compatible with my P320?
A: Yes. All barrels are drop-in ready and require no gunsmithing. Just match your slide size (compact, full-size, etc.).

Q: Can I use a suppressor with these barrels?
A: Yes — many of our barrels are threaded for suppressor or compensator use. Always confirm the thread pitch.

Q: Do you carry barrels for all P320 sizes?
A: Yes — we carry barrels for full-size, compact, XCompact, and other Sig P320 configurations.

Q: What's the benefit of fluting?
A: Fluting reduces weight, increases surface area for cooling, and looks great on custom builds.

🔗 Build Your Custom P320

Pair your upgraded barrel with these compatible parts:

🚀 Why Buy from Mounts Plus?

✔️ Factory & premium aftermarket barrels in stock
✔️ Competitive pricing & fast shipping
✔️ Trusted brands like Faxon, GGP, True Precision
✔️ Outstanding customer support

🛒 Ready to Upgrade?

Your Sig P320 barrel is one of the easiest and most effective ways to enhance your firearm’s performance, reliability, and appearance. Whether you're after a match-grade shooter or a stealthy suppressor-ready setup, we’ve got the right barrel to fit your P320 platform.

→ Browse our full selection above and find your perfect fit.