The Rival Arms Steel Drop-In Barrel for Sig P320 Full Size 9mm Luger is a precision match-grade upgrade built to tighten groups and refine the feel of your pistol. CNC-machined from durable 4340H steel billet and finished in a sleek black PVD coating, this fluted barrel offers a carefully polished bore, 1:10 twist rate, and 6-groove rifling for consistent, repeatable accuracy shot after shot.

Designed as a true drop-in component, this non-threaded barrel installs easily in Sig Sauer P320 Full Size models with no gunsmith fitting required, making it ideal for shooters who want a straightforward accuracy boost for training, range work, or competition. The target-crowned muzzle helps maintain stability and uniform bullet exit, while Rival Arms’ attention to detail and hand inspection reflect the brand’s focus on quality craftsmanship and performance-driven design.

Key Features:

• Manufacturer: Rival Arms
• Model: RA20P401A Precision Match Grade Drop-In Barrel
• Caliber: 9mm Luger
• Barrel Length: 3.90"
• Twist Rate: 1:10" with 6-groove rifling
• Barrel Type: Fluted, non-threaded, match grade drop-in
• Barrel Material: 4340H steel billet with black PVD finish
• Compatible With: Sig Sauer P320 Full Size