Availability: In Stock
Current Stock: Out of stock
If you're running a Sig Sauer P320 Full Size and want to shoot suppressed or thread a muzzle device, the Grey Ghost Precision P320 Full Size Threaded Barrel is a drop-in upgrade built for shooters who won't compromise on accuracy. GGP engineered this barrel from 416R stainless steel with match-grade tolerances, so you get the precision you'd expect from a competition or long-range build without the gunsmith bill. It's the kind of part that tells you the maker understands what serious shooters actually need—tight specs, reliable function, and a price that doesn't feel like a markup for a name.
The threaded barrel threads right into your P320 Full Size slide with zero fitting required. GGP holds final dimensions to ±0.003", which is tight enough to deliver shot-to-shot consistency where it matters. The 9mm Match chamber is cut to SAAMI specification, so it'll run factory ammo without hiccups, and the 1:10 twist rate is optimized for the caliber's typical bullet weights. Whether you're adding a can for hearing protection on the range or mounting a compensator for faster follow-ups, this barrel handles it.
GGP's team built their reputation on three principles: accuracy, reliability, and price. This barrel reflects that philosophy. It's the kind of upgrade that exists because working gunsmiths and competition shooters demanded it—not because marketing needed another SKU. If you shoot your P320 enough to notice the difference between a sloppy barrel and a tight one, this is for you.
| Brand | Grey Ghost Precision |
| Firearm Compatibility | Sig Sauer P320 Full Size |
| Caliber | 9mm |
| Material | 416R Stainless Steel |
| Chamber | 9mm Match, SAAMI Spec |
| Twist Rate | 1:10 |
| Dimensional Tolerance | ±0.003" |
| Installation | Drop-in barrel |
Yes. This is a drop-in barrel designed for the P320 Full Size. No gunsmithing or special fitting is required—it installs into your existing slide.
Yes, the barrel is threaded to accept suppressors and other muzzle devices.
This barrel has a 9mm Match chamber machined to SAAMI specification, so it runs standard 9mm factory ammunition reliably.
That level of precision tolerance means tighter fit between the barrel and breech, which translates to better shot-to-shot consistency and accuracy. It's the kind of spec you find in match-grade and competition barrels.
SKU: 115682269 • Width: 3in • Height: 1in • Depth: 8in • Weight: 0.38oz
Availability: In Stock
Current Stock: Out of stock
If you're running a Sig Sauer P320 Full Size and want to shoot suppressed or thread a muzzle device, the Grey Ghost Precision P320 Full Size Threaded Barrel is a drop-in upgrade built for shooters who won't compromise on accuracy. GGP engineered this barrel from 416R stainless steel with match-grade tolerances, so you get the precision you'd expect from a competition or long-range build without the gunsmith bill. It's the kind of part that tells you the maker understands what serious shooters actually need—tight specs, reliable function, and a price that doesn't feel like a markup for a name.
The threaded barrel threads right into your P320 Full Size slide with zero fitting required. GGP holds final dimensions to ±0.003", which is tight enough to deliver shot-to-shot consistency where it matters. The 9mm Match chamber is cut to SAAMI specification, so it'll run factory ammo without hiccups, and the 1:10 twist rate is optimized for the caliber's typical bullet weights. Whether you're adding a can for hearing protection on the range or mounting a compensator for faster follow-ups, this barrel handles it.
GGP's team built their reputation on three principles: accuracy, reliability, and price. This barrel reflects that philosophy. It's the kind of upgrade that exists because working gunsmiths and competition shooters demanded it—not because marketing needed another SKU. If you shoot your P320 enough to notice the difference between a sloppy barrel and a tight one, this is for you.
| Brand | Grey Ghost Precision |
| Firearm Compatibility | Sig Sauer P320 Full Size |
| Caliber | 9mm |
| Material | 416R Stainless Steel |
| Chamber | 9mm Match, SAAMI Spec |
| Twist Rate | 1:10 |
| Dimensional Tolerance | ±0.003" |
| Installation | Drop-in barrel |
Yes. This is a drop-in barrel designed for the P320 Full Size. No gunsmithing or special fitting is required—it installs into your existing slide.
Yes, the barrel is threaded to accept suppressors and other muzzle devices.
This barrel has a 9mm Match chamber machined to SAAMI specification, so it runs standard 9mm factory ammunition reliably.
That level of precision tolerance means tighter fit between the barrel and breech, which translates to better shot-to-shot consistency and accuracy. It's the kind of spec you find in match-grade and competition barrels.
SKU: 115682269 • Width: 3in • Height: 1in • Depth: 8in • Weight: 0.38oz