SKU: GGPBARRELP320FTP
The Grey Ghost Precision P320 Full Size Threaded Barrel is a match-grade 9mm replacement barrel engineered for the SIG Sauer P320 full-size platform. Machined from 416R stainless steel and finished in durable nitride, this barrel delivers the precision and durability operators expect from a purpose-built upgrade component.
The 1/2 x 28 right-hand threading allows direct attachment of 9mm suppressors and muzzle devices without adapters, a critical feature for shooters running sound mitigation on duty or during training. The match-grade construction ensures tight tolerances that support consistent accuracy downrange—essential when upgrading from factory P320 barrels. The 416R stainless steel substrate provides corrosion resistance in field environments, while the nitride finish adds wear protection without increasing bulk or weight.
This barrel suits law enforcement instructors, armed professionals, and serious sport shooters who demand interchangeable-chassis platform reliability. Whether running suppressed duty loads, precision practice drills, or dynamic range courses, a match-grade barrel upgrade addresses the performance ceiling of factory P320 full-size configurations. The drop-in design simplifies installation on existing frames and slides without gunsmithing.
The P320 platform's modular design has made it standard-issue for multiple military and law enforcement agencies. A match-grade barrel upgrade reflects the serious shooter's understanding that barrel quality directly influences group size and shot-to-shot consistency. GGP barrels are known for holding tight tolerances and supporting both suppressed and unsuppressed shooting applications across the P320 line.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.